PERAN ARSITEKTUR AKAR DALAM ADAPTASI SORGUM TERHADAP CEKAMAN KEKERINGAN (Review)
DOI:
https://doi.org/10.35335/fruitset.v13i3.6653Keywords:
Angle Root, Cereal Crop, Deeper Root, Root Morphology, Root PhysiologyAbstract
Sorghum is a drought-tolerant cereal crop and a strategic component of food security in semi-arid regions. Its adaptation to water deficit is largely determined by root system architecture (RSA), which includes root depth, lateral distribution, and interactions with microorganisms. An adaptive RSA allows sorghum to access water reserves, enhance nutrient uptake, and maintain growth and grain yield under drought. Root physiological mechanisms, such as osmolyte accumulation and antioxidant systems, support cellular homeostasis, while hormonal regulation (abscisic acid) and the transcription factor SbNAC9 coordinate gene expression for root development and stress defense. The synergy among these morphological, physiological, and molecular responses enables sorghum to sustain metabolism during prolonged water deficits. This review synthesizes existing literature on the role of RSA in sorghum’s drought adaptation, highlighting the connections between root structure, physiological responses, and molecular pathways. These insights provide a valuable framework for root-based breeding strategies aimed at enhancing drought tolerance. Ultimately, RSA acts as a central hub, integrating various adaptations to support crop resilience and productivity under arid conditions.
References
Ali, A. E. E., Sharp, R. E., Greeley, L., Peck, S. C., Tabb, D. L., & Ludidi, N. (2025). Proteomic dataset of sorghum leaf and root responses to single and combined drought and heat stress. Scientific Data , 12(1). https://doi.org/10.1038/s41597-025-04369-2
Aslam, M. M., Waseem, M., Jakada, B. H., Okal, E. J., Lei, Z., Sohaib, H., Saqib, A., Yuan, W., Xu, W., & Zhang, Q. (2022). Mechanisms of Abscisic Acid-Mediated Drought Stress Responses in Plants. https://doi.org/10.3390/10.3390/ijms23031084
Chen, X., Wu, Q., Gao, Y., Zhang, J., Wang, Y., Zhang, R., Zhou, Y., Xiao, M., Xu, W., & Huang, R. (2020). The role of deep roots in sorghum yield production under drought conditions. Agronomy, 10(4). https://doi.org/10.3390/AGRONOMY10040611
Comas, L. H., Becker, S. R., Cruz, V. M. V., Byrne, P. F., & Dierig, D. A. (2013). Root traits contributing to plant productivity under drought. In Frontiers in Plant Science (Vol. 4, Issue NOV). Frontiers Research Foundation. https://doi.org/10.3389/fpls.2013.00442
De Bauw, P., Mai, T. H., Schnepf, A., Merckx, R., Smolders, E., & Vanderborght, J. (2020). A functional-structural model of upland rice root systems reveals the importance of laterals and growing root tips for phosphate uptake from wet and dry soils. Annals of Botany, 126(4), 789–806. https://doi.org/10.1093/aob/mcaa120
Demissie, H. S., Mindaye, T. T., Teklu, D. N., & Kebede, F. G. (2023). Root system architecture analysis of sorghum genotypes and its effect on drought adaptation. Rhizosphere, 27. https://doi.org/10.1016/j.rhisph.2023.100772
Djanaguiraman, M., Gowsiga, S., Govindaraj, M., Habyarimana, E., Senthil, A., Thavaprakaash, N., Jeyakumar, P., Kokilavani, J., & Chellammal, C. (2024). Impact of root architecture and transpiration rate on drought tolerance in stay-green sorghum. Crop Science, 64(5), 2612–2629. https://doi.org/10.1002/csc2.21108
Feng, X., Jia, L., Cai, Y., Guan, H., Zheng, D., Zhang, W., Xiong, H., Zhou, H., Wen, Y., Hu, Y., Zhang, X., Wang, Q., Wu, F., Xu, J., & Lu, Y. (2022). ABA-inducible DEEPER ROOTING 1 improves adaptation of maize to water deficiency. Plant Biotechnology Journal, 20(11), 2077–2088. https://doi.org/10.1111/pbi.13889
Freschet, G. T., Pagès, L., Iversen, C. M., Comas, L. H., Rewald, B., Roumet, C., Klimešová, J., Zadworny, M., Poorter, H., Postma, J. A., Adams, T. S., Bagniewska-Zadworna, A., Bengough, A. G., Blancaflor, E. B., Brunner, I., Cornelissen, J. H. C., Garnier, E., Gessler, A., Hobbie, S. E., … McCormack, M. L. (2021). A starting guide to root ecology: strengthening ecological concepts and standardising root classification, sampling, processing and trait measurements. In New Phytologist (Vol. 232, Issue 3, pp. 973–1122). John Wiley and Sons Inc. https://doi.org/10.1111/nph.17572
Frew, A. (2023). Water availability alters the community structure of arbuscular mycorrhizal fungi and determines plant mycorrhizal benefit. Plants People Planet, 5(5), 683–689. https://doi.org/10.1002/ppp3.10372
Jin, X., Zheng, Y., Wang, J., Chen, W., Yang, Z., Chen, Y., Yang, Y., Lu, G., & Sun, B. (2023). SbNAC9 Improves Drought Tolerance by Enhancing Scavenging Ability of Reactive Oxygen Species and Activating Stress-Responsive Genes of Sorghum. International Journal of Molecular Sciences, 24(3). https://doi.org/10.3390/ijms24032401
Kalra, A., Goel, S., & Elias, A. A. (2024). Understanding role of roots in plant response to drought: Way forward to climate-resilient crops. In Plant Genome (Vol. 17, Issue 1). John Wiley and Sons Inc. https://doi.org/10.1002/tpg2.20395
Li, H., Li, Y., Ke, Q., Kwak, S. S., Zhang, S., & Deng, X. (2020). Physiological and differential proteomic analyses of imitation drought stress response in sorghum bicolor root at the seedling stage. International Journal of Molecular Sciences, 21(23), 1–28. https://doi.org/10.3390/ijms21239174
Lynch, J. P. (2019). Root phenotypes for improved nutrient capture: an underexploited opportunity for global agriculture. In New Phytologist (Vol. 223, Issue 2, pp. 548–564). Blackwell Publishing Ltd. https://doi.org/10.1111/nph.15738
Maqbool, S., Hassan, M. A., Xia, X., York, L. M., Rasheed, A., & He, Z. (2022). Root system architecture in cereals: progress, challenges and perspective. In Plant Journal (Vol. 110, Issue 1, pp. 23–42). John Wiley and Sons Inc. https://doi.org/10.1111/tpj.15669
Meister, R., Rajani, M. S., Ruzicka, D., & Schachtman, D. P. (2014). Challenges of modifying root traits in crops for agriculture. In Trends in Plant Science (Vol. 19, Issue 12, pp. 779–788). Elsevier Ltd. https://doi.org/10.1016/j.tplants.2014.08.005
Mirzabaev, A., Bezner Kerr, R., Hasegawa, T., Pradhan, P., Wreford, A., Cristina Tirado von der Pahlen, M., & Gurney-Smith, H. (2023). Severe climate change risks to food security and nutrition. Climate Risk Management, 39. https://doi.org/10.1016/j.crm.2022.100473
Pixley, K. V., Cairns, J. E., Lopez-Ridaura, S., Ojiewo, C. O., Dawud, M. A., Drabo, I., Mindaye, T., Nebie, B., Asea, G., Das, B., Daudi, H., Desmae, H., Batieno, B. J., Boukar, O., Mukankusi, C. T. M., Nkalubo, S. T., Hearne, S. J., Dhugga, K. S., Gandhi, H., … Zepeda-Villarreal, E. A. (2023). Redesigning crop varieties to win the race between climate change and food security. In Molecular Plant (Vol. 16, Issue 10, pp. 1590–1611). Cell Press. https://doi.org/10.1016/j.molp.2023.09.003
Putri Andini Mandasari, Wirnas, D., Trikoesoemaningtyas, & Sopandie, D. (2020). Perbedaan Tanggap Morfologi Akar Galur Inbrida Sorgum pada Kondisi P Rendah. Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy), 48(1), 30–36. https://doi.org/10.24831/jai.v48i1.29894
Ranjan, A., Sinha, R., Singla-Pareek, S. L., Pareek, A., & Singh, A. K. (2022). Shaping the root system architecture in plants for adaptation to drought stress. Physiologia Plantarum, 174(2). https://doi.org/10.1111/ppl.13651
Reich, M. (2017). The significance of nutrient interactions for crop yield and nutrient use efficiency. In Plant Macronutrient Use Efficiency: Molecular and Genomic Perspectives in Crop Plants (pp. 65–82). Elsevier. https://doi.org/10.1016/B978-0-12-811308-0.00004-1
Rongsawat, T., Peltier, J. B., Boyer, J. C., Véry, A. A., & Sentenac, H. (2021). Looking for Root Hairs to Overcome Poor Soils. In Trends in Plant Science (Vol. 26, Issue 1, pp. 83–94). Elsevier Ltd. https://doi.org/10.1016/j.tplants.2020.09.001
Savari, M., Eskandari Damaneh, H., & Eskandari Damaneh, H. (2024). Managing the effects of drought through the use of risk reduction strategy in the agricultural sector of Iran. Climate Risk Management, 45. https://doi.org/10.1016/j.crm.2024.100619
Steffens, B., & Rasmussen, A. (2016). The physiology of adventitious roots. Plant Physiology, 170(2), 603–617. https://doi.org/10.1104/pp.15.01360
Tamir, H. D., Menamo, T. M., & Mindaye, T. T. (2021). Root system architecture traits diversity and association with grain yield for drought adapted sorghum genotypes. https://doi.org/10.21203/rs.3.rs-617280/v1
Wang, M., Ahmad, I., Hussien Ibrahim, M., Qin, B., Zhu, H., Zhu, G., & Zhou, G. (2025). Differential Responses of Two Sorghum Genotypes to Drought Stress at Seedling Stage Revealed by Integrated Physiological and Transcriptional Analysis. Agriculture, 15(16), 1780. https://doi.org/10.3390/agriculture15161780
Ye, H., Roorkiwal, M., Valliyodan, B., Zhou, L., Chen, P., Varshney, R. K., & Nguyen, H. T. (2018). Genetic diversity of root system architecture in response to drought stress in grain legumes. In Journal of Experimental Botany (Vol. 69, Issue 13, pp. 3267–3277). Oxford University Press. https://doi.org/10.1093/jxb/ery082
Yu, P., Gutjahr, C., Li, C., & Hochholdinger, F. (2016). Genetic Control of Lateral Root Formation in Cereals. In Trends in Plant Science (Vol. 21, Issue 11, pp. 951–961). Elsevier Ltd. https://doi.org/10.1016/j.tplants.2016.07.011
Zhang, Y., Wu, X., Wang, X., Dai, M., & Peng, Y. (2025). Crop root system architecture in drought response. In Journal of Genetics and Genomics (Vol. 52, Issue 1, pp. 4–13). Institute of Genetics and Developmental Biology. https://doi.org/10.1016/j.jgg.2024.05.001
