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Anwar M, Saleem MA, Dan M, Malik W, Ul-Allah S, Ahmad MQ, Qayyum A, Amjid MW, Zia ZU, Afzal H, Asif M, Ur Rahman MA, Hu Z. Morphological, physiological and molecular assessment of cotton for drought tolerance under field conditions. Saudi J Biol Sci 2022; 29:444-452. [PMID: 35002440 PMCID: PMC8717151 DOI: 10.1016/j.sjbs.2021.09.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 08/31/2021] [Accepted: 09/05/2021] [Indexed: 11/29/2022] Open
Abstract
Climate change could be an existential threat to many crops. Drought and heat stress are becoming harder for cultivated crops. Cotton in Pakistan is grown under natural high temperature and low moisture, could be used as a source of heat and drought tolerance. Therefore, the study was conducted to morphological, physiological and molecular characterization of cotton genotypes under field conditions. A total of 25 cotton genotypes were selected from the gene pool of Pakistan based on tolerance to heat and drought stress. In field trail, the stress related traits like boll retention percentage, plant height, number of nodes and inter-nodal distance were recorded. In physiological assessment, traits such as photosynthesis rate, stomatal conductance, transpiration rate, leaf temperature, relative water content and excised leaf water loss were observed. At molecular level, a set of 19 important transcription factors, controlling drought/heat stress tolerance (HSPCB, GHSP26, HSFA2, HSP101, HSP3, DREB1A, DREB2A, TPS, GhNAC2, GbMYB5, GhWRKY41, GhMKK3, GhMPK17, GhMKK1, GhMPK2, APX1, HSC70, ANNAT8, and GhPP2A1) were analyzed from all genotypes. Data analyses depicted that boll retention percentage, photosynthesis, stomatal conductance, relative water content under the stress conditions were associated with the presence of important drought & heat TF/genes which depicts high genetic potential of Pakistani cotton varieties against abiotic stress. The variety MNH-886 appeared in medium plant height, high boll retention percentage, high relative water content, photosynthesis rate, stomatal conductance, transpiration rate and with maximum number transcription factors under study. The variety may be used as source material for heat and drought tolerant cotton breeding. The results of this study may be useful for the cotton breeders to develop genotype adoptable to environmental stresses under climate change scenario.
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Affiliation(s)
- Muhammad Anwar
- Guangdong Technology Research Center for Marine Algal Bioengineering, Guangdong Key Laboratory of Plant Epigenetics, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, China.,Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
| | - Muhammad Asif Saleem
- Department of Plant Breeding & Genetics, Bahauddin Zakariya University, Multan, Pakistan
| | - Ma Dan
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agriculture Sciences, Anyang 455000, China
| | - Waqas Malik
- Department of Plant Breeding & Genetics, Bahauddin Zakariya University, Multan, Pakistan
| | - Sami Ul-Allah
- College of Agriculture, Bahauddin Zakariya University, Bahadur Sub-campus, Layyah, Pakistan
| | - Muhammad Qadir Ahmad
- Department of Plant Breeding & Genetics, Bahauddin Zakariya University, Multan, Pakistan
| | - Abdul Qayyum
- Department of Plant Breeding & Genetics, Bahauddin Zakariya University, Multan, Pakistan
| | - Muhammad Waqas Amjid
- State Key Lab. of Crop Genetics & Germplasm, Nanjing Agriculture University, China
| | | | - Hammad Afzal
- Department of Plant Breeding & Genetics, Bahauddin Zakariya University, Multan, Pakistan
| | - Muhammad Asif
- Department of Plant Breeding & Genetics, Bahauddin Zakariya University, Multan, Pakistan
| | - Muhammad Aneeq Ur Rahman
- Guangdong Technology Research Center for Marine Algal Bioengineering, Guangdong Key Laboratory of Plant Epigenetics, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, China
| | - Zhangli Hu
- Guangdong Technology Research Center for Marine Algal Bioengineering, Guangdong Key Laboratory of Plant Epigenetics, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, China.,Shenzhen Key Laboratory of Marine Bioresource & Eco-environmental Science, Longhua Innovation Institute for Biotechnology, Shenzhen University, Shenzhen 518060, China
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