Editorial Book

Book Title: Crop Stress Physiology (Volume 1)

PAID ACCESS | Published on : 26-Jun-2024 | Pages: 55-73 |

Source – Sink Dynamics and Assimilate Partitioning in Stress-affected Crops

• Rekha GV
• Department of Horticulture, School of Life Sciences, Central University of Tamil Nadu, Thiruvarur, Tamil Nadu, India.


• Iniya Bharathi R
• Department of Horticulture, School of Life Sciences, Central University of Tamil Nadu, Thiruvarur, Tamil Nadu, India.


• Srivignesh Sundaresan
• Department of Horticulture, School of Life Sciences, Central University of Tamil Nadu, Thiruvarur, Tamil Nadu, India.

Abstract

Keywords

Source-sink, physiological, molecular breeding, biotechnology, genomic

References

Ahouvi, Y., Haber, Z., Zach, Y.Y., Rosental, L., Toubiana, D., Sharma, D., Alseekh, S., Tajima, H., Fernie, A.R., Brotman, Y. and Blumwald, E., 2022. The alteration of tomato chloroplast vesiculation positively affects whole-plant source–sink relations and fruit metabolism under stress conditions. Plant and Cell Physiology 63 (12), 2008–2026.

Albacete, A., Cantero-Navarro, E., Balibrea, M.E., Großkinsky, D.K., de la Cruz González, M., Martínez-Andújar, C., Smigocki, A.C., Roitsch, T. and Pérez-Alfocea, F., 2014. Hormonal and metabolic regulation of tomato fruit sink activity and yield under salinity. Journal of Experimental Botany 65 (20), 6081–6095.

Aluko, G.K., Fischer, K.S., 1988. The effect of changes of assimilate supply around flowering on grain sink size and yield of maize (Zea mays L.) cultivars of tropical and temperate adaptation. Australian Journal of Agricultural Research 39 (2), 153–161.

Amoah, J.N., Keitel, C., Kaiser, B.N., 2025. Nitrogen deficiency impacts growth and modulates carbon metabolism in maize. Planta 262 (4), 94. https://doi.org/10.1007/s00425-025-04814-x

Anuradha, R.K., Bishnoi, C., 2017. Assimilate partitioning and distribution in fruit crops: A review. Journal of Pharmacognosy and Phytochemistry 6 (3), 479–484.

Asad, M.A.U., Guan, X., Zhang, Y., Zhou, L., Bartas, M., Ullah, N., Zhou, W. and Cheng, F., 2025. Nitrogen deficiency accelerates rice leaf senescence through ABA signaling and sugar metabolic shifts. Physiologia Plantarum 177 (1), e70124.

Ashraf, M.H.P.J.C., Harris, P.J., 2013. Photosynthesis under stressful environments: An overview. Photosynthetica 51 (2), 163–190.

Asseng, S., Kassie, B.T., Labra, M.H., Amador, C., Calderini, D.F., 2017. Simulating the impact of source–sink manipulations in wheat. Field Crops Research 202, 47–56.

Asseng, S., Martre, P., Maiorano, A., Rötter, R.P., O’Leary, G.J., Fitzgerald, G.J., Ewert, F., 2019. Climate change impact and adaptation for wheat protein. Global Change Biology 25 (1), 155–173.

Baby, T., Collins, C., Tyerman, S.D., Gilliham, M., 2016. Salinity negatively affects pollen tube growth and fruit set in grapevines and is not mitigated by silicon. American Journal of Enology and Viticulture 67 (2), 218–228.

Balasubramaniam, T., Shen, G., Esmaeili, N., Zhang, H., 2023. Plants' response mechanisms to salinity stress. Plants 12 (12), 2253. https://doi.org/10.3390/plants12122253

Barbottin, A., Lecomte, C., Bouchard, C., Jeuffroy, M.H., 2005. Nitrogen remobilization during grain filling in wheat: Genotypic and environmental effects. Crop Science 45, 1141–1150.

Barnabás, B., Jäger, K., Fehér, A., 2008. The effect of drought and heat stress on reproductive processes in cereals. Plant, Cell & Environment 31 (1), 11–38.

Bhogale, S., Mahajan, A.S., Natarajan, B., Rajabhoj, M., Thulasiram, H.V., Banerjee, A.K., 2014. MicroRNA156: A potential graft-transmissible microRNA that modulates plant architecture and tuberization in Solanum tuberosum ssp. andigena. Plant Physiology 164 (2), 1011–1027.

Bigot, S., Martínez, J.P., Lutts, S., Quinet, M., 2025. Impact of salinity on sugar composition and partitioning in relation to flower fertility in Solanum lycopersicum and Solanum chilense. Horticulturae 11 (3), 285.

Bita, C.E., Gerats, T., 2013. Plant tolerance to high temperature in a changing environment: Scientific fundamentals and production of heat stress-tolerant crops. Frontiers in Plant Science 4, 273.

Budak, H., Hussain, B., Khan, Z., Ozturk, N.Z., Ullah, N., 2015. From genetics to functional genomics: Improvement in drought signaling and tolerance in wheat. Frontiers in Plant Science 6, 1012.

Chauhan, J., Prathibha, M.D., Singh, P., Choyal, P., Mishra, U.N., Saha, D., Kumar, R., Anuragi, H., Pandey, S., Bose, B. and Mehta, B., 2023. Plant photosynthesis under abiotic stresses: Damages, adaptive, and signaling mechanisms. Plant Stress 10, 100296.

Chen, L.H., Xu, M., Cheng, Z., Yang, L.T., 2024. Effects of nitrogen deficiency on the photosynthesis, chlorophyll a fluorescence, antioxidant system, and sulfur compounds in Oryza sativa. International Journal of Molecular Sciences 25 (19), 10409. https://doi.org/10.3390/ijms251910409

Cuartero, J., Fernández-Muñoz, R., 1998. Tomato and salinity. Scientia Horticulturae 78 (1–4), 83–125.

Dorais, M., Papadopoulos, A.P., Gosselin, A., 2002. Greenhouse tomato fruit quality. Horticultural Reviews 26, 239–319.

El Sabagh, A., Islam, M.S., Skalicky, M., Ali Raza, M., Singh, K., Anwar Hossain, M., Hossain, A., Mahboob, W., Iqbal, M.A., Ratnasekera, D. and Singhal, R.K.,2021. Salinity stress in wheat (Triticum aestivum L.) in the changing climate: Adaptation and management strategies. Frontiers in Agronomy 3, 661932.

Fang, L., Struik, P.C., Girousse, C., Yin, X., Martre, P., 2024. Source–sink relationships during grain filling in wheat in response to various temperature, water deficit, and nitrogen deficit regimes. Journal of Experimental Botany 75 (20), 6563–6578.

Farooq, M., Wahid, A., Kobayashi, N., Fujita, D., Basra, S.M.A., 2009. Plant drought stress: Effects, mechanisms and management. In: Lichtfouse, E., Navarrete, M., Debaeke, P., Véronique, S., Alberola, C. (Eds.), Sustainable Agriculture. Springer, Dordrecht, pp. 153–188. https://doi.org/10.1007/978-90-481-2666-8_12

Ganeva, D., Grozeva, S., Pevicharova, G., 2019. Effect of reduced irrigation on flowering, fruit set and yield of indeterminate tomato. International Journal of Recent Technology and Engineering 8 (2), 932–936.

Génard, M., Dauzat, J., Franck, N., Lescourret, F., Moitrier, N., Vaast, P., Vercambre, G., 2008. Carbon allocation in fruit trees: From theory to modelling. Trees 22 (3), 269–282.

Girousse, C., 2023. Heat shock exposure during early wheat grain development can reduce maximum endosperm cell number but not necessarily final grain dry mass. PLoS ONE 18 (4), e0285218.

Hajibarat, Z., Saidi, A., 2022. Senescence-associated proteins and nitrogen remobilization in grain filling under drought stress condition. Journal of Genetic Engineering and Biotechnology 20 (1), 101. https://doi.org/10.1186/s43141-022-00378-5

Hasan, M.M., Liu, X.D., Waseem, M., Guang-Qian, Y., Alabdallah, N.M., Jahan, M.S., Fang, X.W., 2022. ABA activated SnRK2 kinases: An emerging role in plant growth and physiology. Plant Signaling & Behavior 17 (1), 2071024. https://doi.org/10.1080/15592324.2022.2071024

Jiang, D., Mulero, G., Bonfil, D.J., Helman, D., 2022. Early or late? The role of genotype phenology in determining wheat response to drought under future high atmospheric CO₂ levels. Plant, Cell & Environment 45 (12), 3445–3461.

Kennedy, R.A., Fox, T.C., Loescher, W.H., 1988. Factors affecting photosynthesis, productivity, and yield. HortScience 23 (1), 33.

Khan, Q., Qin, Y., Guo, D.J., Yang, L.T., Song, X.P., Xing, Y.X., Li, Y.R., 2023. A review of the diverse genes and molecules involved in sucrose metabolism and innovative approaches to improve sucrose content in sugarcane. Agronomy 13 (12), 2957.

Khan, N., 2025. Molecular insights into ABA-mediated regulation of stress tolerance and development in plants. International Journal of Molecular Sciences 26 (16), 7872. https://doi.org/10.3390/ijms26167872

Kopecká, R., Kameniarová, M., Černý, M., Brzobohatý, B., Novák, J., 2023. Abiotic stress in crop production. International Journal of Molecular Sciences 24 (7), 6603.

Körner, C., 2015. Paradigm shift in plant growth control. Current Opinion in Plant Biology 25, 107–114.

Kumar, P., Choudhary, M., Halder, T., Prakash, N.R., Singh, V., V, V.T., Sheoran, S., T, R.K., Longmei, N., Rakshit, S. and Siddique, K.H., 2022. Salinity stress tolerance and omics approaches: Revisiting the progress and achievements in major cereal crops. Heredity 128 (6), 497–518.

Kumar, S., 2020. Abiotic stresses and their effects on plant growth, yield and nutritional quality of agricultural produce. International Journal of Food Science and Agriculture 4 (4).

Kumar, S., Sharma, N., Sopory, S.K., Sanan-Mishra, N., 2024. miRNAs and genes as molecular regulators of rice grain morphology and yield. Plant Physiology and Biochemistry 207, 108363.

Kushwaha, A.K., Thukkaram, D., Rastogi, D., Singh, N.S., Beer, K., Debnath, P., Dayal, V., Yadav, A., Das, S.S., Bajpai, A. and Manoharan, M., 2025. Climate-induced heat stress responses on indigenous varieties and elite hybrids of mango (Mangifera indica L.). Agriculture 15 (15), 1619.

Lawlor, D.W., Paul, M.J., 2014. Source/sink interactions underpin crop yield: The case for trehalose 6-phosphate/SnRK1 in improvement of wheat. Frontiers in Plant Science 5, 418.

Li, X., Zhou, Y., Shuai, P., Wang, X., Peng, S., Wang, F., 2023. Source–sink balance optimization depends on soil nitrogen condition so as to increase rice yield and N use efficiency. Agronomy 13 (3), 907.

Liu, Y., Fu, J., Chen, H., Zhang, Y., Li, S., Zhu, K., Xu, Y., Wang, W., Gu, J., Zhang, H. and Wang, Z., 2025. Cytokinins redistributing drives nitrogen remobilization from source to sink in wheat under moderate water limitation during grain filling. Journal of Integrative Agriculture 25 (5), 1857-1870.

Lu, Y., Fricke, W., 2023. Salt stress-regulation of root water uptake in a whole-plant and diurnal context. International Journal of Molecular Sciences 24 (9), 8070. https://doi.org/10.3390/ijms24098070

Maszkowska, J., Szymańska, K.P., Kasztelan, A., Krzywińska, E., Sztatelman, O., Dobrowolska, G., 2021. The multifaceted regulation of SnRK2 kinases. Cells 10 (9), 2180. https://doi.org/10.3390/cells10092180

Mishra, S., Spaccarotella, K., Gido, J., Samanta, I., Chowdhary, G., 2023. Effects of heat stress on plant-nutrient relations: An update on nutrient uptake, transport, and assimilation. International Journal of Molecular Sciences 24 (21), 15670.

Mu, X., Chen, Y., 2021. The physiological response of photosynthesis to nitrogen deficiency. Plant Physiology and Biochemistry 158, 76–82.

Naher, J., Sabuj, Z.H., Sumona, S.I., Chakraborty, S.P., Hossain, M.R., Rohman, M.M., Nath, U.K., 2024. Heat stress modulates superoxide and hydrogen peroxide dismutation and starch synthesis during tuber development in potato. American Journal of Potato Research 101 (4), 275–289.

Ntshalintshali, S., Sibiya, S.G.P., Mabuza, N., Nkomo, M., Buthelezi, L.G., 2025. Seed priming in legume crops: Mechanisms, applications and future directions for enhanced germination, growth and abiotic stress tolerance in sustainable agriculture: A review. Journal of Agronomy and Crop Science 211 (5), e70115.

Osakabe, Y., Osakabe, K., Shinozaki, K., Tran, L.S.P., 2014. Response of plants to water stress. Frontiers in Plant Science 5, 86.

Oyebamiji, Y.O., Shamsudin, N.A.A., Ikmal, A.M., Rafii, M.O.H.D., 2023. Heat stress in vegetables: Impacts and management strategies-A review. Sains Malaysiana 52, 1925–1938.

Martínez-Noël, G.M., Tognetti, J.A., 2018. Sugar signaling under abiotic stress in plants. In: Paraviz, A; Mohammad Abbas, A; Vijay Pratap Singh; Durgesh Kumar, T; Pravej, A; & Mohammed, NA. (Eds.), Plant Metabolites and Regulation Under Environmental Stress, Academic Press, pp. 397–406. https://doi.org/10.1016/B978-0-12-812689-9.00022-4

Paul, M.J., Foyer, C.H., 2001. Sink regulation of photosynthesis. Journal of Experimental Botany 52 (360), 1383–1400.

Paul, M.J., Gonzalez-Uriarte, A., Griffiths, C.A., Hassani-Pak, K., 2018. The role of trehalose 6-phosphate in crop yield and resilience. Plant Physiology 177 (1), 12–23.

Padhan, B.K., Sathee, L., Kumar, S., Chinnusamy, V., Kumar, A., 2023. Variation in nitrogen partitioning and reproductive stage nitrogen remobilization determines nitrogen grain production efficiency (NUEg) in diverse rice genotypes under varying nitrogen supply. Frontiers in Plant Science 14, 1093581.

Panozzo, A., Bolla, P.K., Barion, G., Botton, A., Vamerali, T., 2025. Phytohormonal regulation of abiotic stress tolerance, leaf senescence and yield response in field crops: A comprehensive review. BioTech 14 (1), 14.

Pinheiro, C., Chaves, M.M., 2011. Photosynthesis and drought: Can we make metabolic connections from available data? Journal of Experimental Botany 62 (3), 869–882.

Podzimska-Sroka, D., O'Shea, C., Gregersen, P.L., Skriver, K., 2015. NAC transcription factors in senescence: From molecular structure to function in crops. Plants 4 (3), 412–448.

Rahman, S., Barot, M., Modi, A., Husen, A., 2025. Osmolytes biosynthesis, accumulation and signalling pathways in plant systems under changing environment: An overview. In: Husen, A. (Ed) Roles of Osmolytes in Changing Environment, Elsevier, pp. 1–12. https://doi.org/10.1016/B978-0-443-26549-5.00018-7

Sane, A.K., Ngom, M., Ba, O., Kane, A., Sy, M.O., 2025. Salinity stress in plants and enhancing tomato tolerance: Insights from chemical and bio-organic fertilization, priming, and breeding approaches. Agronomy Journal 117, e70252. https://doi.org/10.1002/agj2.70252

Santiago, J.P., Tegeder, M., 2017. Implications of nitrogen phloem loading for carbon metabolism and transport during Arabidopsis development. Journal of Integrative Plant Biology 59 (6), 409–421.

Sehgal, A., Sita, K., Siddique, K.H., Kumar, R., Bhogireddy, S., Varshney, R.K., Hanumantha Rao, B., Nair, R.M., Prasad, P.V. and Nayyar, H., 2018. Drought or/and heat-stress effects on seed filling in food crops: Impacts on functional biochemistry, seed yields, and nutritional quality. Frontiers in Plant Science 9, 1705.

Shi, Y., Zhang, X., Chang, X., Yan, M., Zhao, H., Qin, Y., Wang, H., 2021. Integrated analysis of DNA methylome and transcriptome reveals epigenetic regulation of CAM photosynthesis in pineapple. BMC Plant Biology 21 (1), 19.

Sinclair, T.R., Jamieson, P.D., 2006. Grain number, wheat yield, and bottling beer: An analysis. Field Crops Research 98 (1), 60–67.

Singh, P., Choudhary, K.K., Chaudhary, N., Gupta, S., Sahu, M., Tejaswini, B., Sarkar, S., 2022. Salt stress resilience in plants mediated through osmolyte accumulation and its crosstalk mechanism with phytohormones. Frontiers in Plant Science 13, 1006617. https://doi.org/10.3389/fpls.2022.1006617

Singh, J., Das, S., Jagadis Gupta, K., Ranjan, A., Foyer, C.H., Thakur, J.K., 2023. Physiological implications of SWEETs in plants and their potential applications in improving source-sink relationships for enhanced yield. Plant Biotechnology Journal 21 (8), 1528–1541. https://doi.org/10.1111/pbi.13982

Smith, M.R., Rao, I.M., Merchant, A., 2018. Source-sink relationships in crop plants and their influence on yield development and nutritional quality. Frontiers in Plant Science 9, 1889.

Verma, V., Ravindran, P., Kumar, P.P., 2016. Plant hormone-mediated regulation of stress responses. BMC Plant Biology 16 (1), 86.

Waadt, R., Seller, C.A., Hsu, P.K., Takahashi, Y., Munemasa, S., Schroeder, J.I., 2022. Plant hormone regulation of abiotic stress responses. Nature Reviews Molecular Cell Biology 23 (10), 680–694.

Wang, L., Deng, F., Ren, W.J., 2015. Shading tolerance in rice is related to better light harvesting and use efficiency and grain filling rate during grain filling period. Field Crops Research 180, 54–62.

Wang, W., Qin, Q., Sun, F., Wang, Y., Xu, D., Li, Z., Fu, B., 2016. Genome-wide differences in DNA methylation changes in two contrasting rice genotypes in response to drought conditions. Frontiers in Plant Science 7, 1675.

Wang, Q.L., Chen, J.H., He, N.Y., Guo, F.Q., 2018. Metabolic reprogramming in chloroplasts under heat stress in plants. International Journal of Molecular Sciences 19 (3), 849 https://doi.org/10.3390/ijms19030849.

Wang, X., Altaf, M.A., Hao, Y., Wang, Z., Zhu, G., 2023. Effect of heat stress on root architecture, photosynthesis, and antioxidant profile of water spinach (Ipomoea aquatica Forsk.) seedlings. Horticulturae 9 (8), 923.

Wei, H., Meng, T., Li, X., Dai, Q., Zhang, H., Yin, X., 2018. Sink-source relationship during rice grain filling is associated with grain nitrogen concentration. Field Crops Research 215, 23–38.

Yang, Q., Wang, G., Dou, J., An, W., Zhang, Y., Wang, S., Tang, Z. and Yu, J., 2025. Plant sugar transporters SWEETs: Structure, function, and cutting-edge research insights. Journal of Agricultural and Food Chemistry 73 (30), 18457–18479.

Yin, X., Guo, W., Spiertz, J.H., 2009. A quantitative approach to characterize sink–source relationships during grain filling in contrasting wheat genotypes. Field Crops Research 114 (1), 119–126.

Yin, X., Struik, P.C., Goudriaan, J., 2021. On the needs for combining physiological principles and mathematics to improve crop models. Field Crops Research 271, 108254.

Yu, C., Song, L., Song, J., Ouyang, B., Guo, L., Shang, L., Wang, T., Li, H., Zhang, J. and Ye, Z., 2018. ShCIGT, a Trihelix family gene, mediates cold and drought tolerance by interacting with SnRK1 in tomato. Plant Science 270, 140–149.

Zahid, G., Iftikhar, S., Shimira, F., Ahmad, H.M., Kaçar, Y.A., 2023. An overview and recent progress of plant growth regulators (PGRs) in the mitigation of abiotic stresses in fruits: A review. Scientia Horticulturae 309, 111621.

Zhang, X., Liu, W., Yin, Y., Zheng, J., Li, J., Tan, X., Wu, L., 2025. WRKY transcription factors participate in abiotic stress responses mediated by sugar metabolism. Frontiers in Plant Science 16, 1646357.

Zhang, Y., Xu, J., Li, R., Ge, Y., Li, Y., Li, R., 2023. Plants' response to abiotic stress: Mechanisms and strategies. International Journal of Molecular Sciences 24 (13), 10915.

Zhong, S., Fei, Z., Chen, Y.R., Zheng, Y., Huang, M., Vrebalov, J., McQuinn, R., Gapper, N., Liu, B., Xiang, J. and Shao, Y., 2013. Single-base resolution methylomes of tomato fruit development reveal epigenome modifications associated with ripening. Nature Biotechnology 31 (2), 154–159.