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Differential seedling growth and tolerance indices reflect drought tolerance in cotton
BACKGROUND: Cotton production is adversely effected by drought stress. It is exposed to drought stress at various critical growth stages grown under a water scarcity environment. Roots are the sensors of plants; they detect osmotic stress under drought stress and play an important role in plant drou...
Autores principales: | , , , , , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
BioMed Central
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9277823/ https://www.ncbi.nlm.nih.gov/pubmed/35820810 http://dx.doi.org/10.1186/s12870-022-03724-4 |
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author | Mahmood, Tahir Iqbal, Muhammad Shahid Li, Hongge Nazir, Mian Faisal Khalid, Shiguftah Sarfraz, Zareen Hu, Daowu Baojun, Chen Geng, Xiaoli Tajo, Sani Muhammad Dev, Washu Iqbal, Zubair Zhao, Pan Hu, Guanjing Du, Xiongming |
author_facet | Mahmood, Tahir Iqbal, Muhammad Shahid Li, Hongge Nazir, Mian Faisal Khalid, Shiguftah Sarfraz, Zareen Hu, Daowu Baojun, Chen Geng, Xiaoli Tajo, Sani Muhammad Dev, Washu Iqbal, Zubair Zhao, Pan Hu, Guanjing Du, Xiongming |
author_sort | Mahmood, Tahir |
collection | PubMed |
description | BACKGROUND: Cotton production is adversely effected by drought stress. It is exposed to drought stress at various critical growth stages grown under a water scarcity environment. Roots are the sensors of plants; they detect osmotic stress under drought stress and play an important role in plant drought tolerance mechanisms. The seedling stage is very sensitive to drought stress, and it needed to explore the methods and plant characteristics that contribute to drought tolerance in cotton. RESULTS: Initially, seedlings of 18 genotypes from three Gossypium species: G. hirsutum, G. barbadense, and G. arboreum, were evaluated for various seedling traits under control (NS) and drought stress (DS). Afterward, six genotypes, including two of each species, one tolerant and one susceptible, were identified based on the cumulative drought sensitivity response index (CDSRI). Finally, growth rates (GR) were examined for shoot and root growth parameters under control and DS in experimental hydroponic conditions. A significant variation of drought stress responses was observed across tested genotypes and species. CDSRI allowed here to identify the drought-sensitive and drought-resistant cultivar of each investigated species. Association among root and shoots growth traits disclosed influential effects of enduring the growth under DS. The traits including root length, volume, and root number were the best indicators with significantly higher differential responses in the tolerant genotypes. These root growth traits, coupled with the accumulation of photosynthates and proline, were also the key indicators of the resistance to drought stress. CONCLUSION: Tolerant genotypes have advanced growth rates and the capacity to cop with drought stress by encouraging characteristics, including root differential growth traits coupled with physiological traits such as chlorophyll and proline contents. Tolerant and elite genotypes of G. hirsutum were more tolerant of drought stress than obsolete genotypes of G. barbadense and G. arboreum. Identified genotypes have a strong genetic basis of drought tolerance, which can be used in cotton breeding programs. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1186/s12870-022-03724-4. |
format | Online Article Text |
id | pubmed-9277823 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | BioMed Central |
record_format | MEDLINE/PubMed |
spelling | pubmed-92778232022-07-14 Differential seedling growth and tolerance indices reflect drought tolerance in cotton Mahmood, Tahir Iqbal, Muhammad Shahid Li, Hongge Nazir, Mian Faisal Khalid, Shiguftah Sarfraz, Zareen Hu, Daowu Baojun, Chen Geng, Xiaoli Tajo, Sani Muhammad Dev, Washu Iqbal, Zubair Zhao, Pan Hu, Guanjing Du, Xiongming BMC Plant Biol Research BACKGROUND: Cotton production is adversely effected by drought stress. It is exposed to drought stress at various critical growth stages grown under a water scarcity environment. Roots are the sensors of plants; they detect osmotic stress under drought stress and play an important role in plant drought tolerance mechanisms. The seedling stage is very sensitive to drought stress, and it needed to explore the methods and plant characteristics that contribute to drought tolerance in cotton. RESULTS: Initially, seedlings of 18 genotypes from three Gossypium species: G. hirsutum, G. barbadense, and G. arboreum, were evaluated for various seedling traits under control (NS) and drought stress (DS). Afterward, six genotypes, including two of each species, one tolerant and one susceptible, were identified based on the cumulative drought sensitivity response index (CDSRI). Finally, growth rates (GR) were examined for shoot and root growth parameters under control and DS in experimental hydroponic conditions. A significant variation of drought stress responses was observed across tested genotypes and species. CDSRI allowed here to identify the drought-sensitive and drought-resistant cultivar of each investigated species. Association among root and shoots growth traits disclosed influential effects of enduring the growth under DS. The traits including root length, volume, and root number were the best indicators with significantly higher differential responses in the tolerant genotypes. These root growth traits, coupled with the accumulation of photosynthates and proline, were also the key indicators of the resistance to drought stress. CONCLUSION: Tolerant genotypes have advanced growth rates and the capacity to cop with drought stress by encouraging characteristics, including root differential growth traits coupled with physiological traits such as chlorophyll and proline contents. Tolerant and elite genotypes of G. hirsutum were more tolerant of drought stress than obsolete genotypes of G. barbadense and G. arboreum. Identified genotypes have a strong genetic basis of drought tolerance, which can be used in cotton breeding programs. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1186/s12870-022-03724-4. BioMed Central 2022-07-11 /pmc/articles/PMC9277823/ /pubmed/35820810 http://dx.doi.org/10.1186/s12870-022-03724-4 Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/ (https://creativecommons.org/publicdomain/zero/1.0/) ) applies to the data made available in this article, unless otherwise stated in a credit line to the data. |
spellingShingle | Research Mahmood, Tahir Iqbal, Muhammad Shahid Li, Hongge Nazir, Mian Faisal Khalid, Shiguftah Sarfraz, Zareen Hu, Daowu Baojun, Chen Geng, Xiaoli Tajo, Sani Muhammad Dev, Washu Iqbal, Zubair Zhao, Pan Hu, Guanjing Du, Xiongming Differential seedling growth and tolerance indices reflect drought tolerance in cotton |
title | Differential seedling growth and tolerance indices reflect drought tolerance in cotton |
title_full | Differential seedling growth and tolerance indices reflect drought tolerance in cotton |
title_fullStr | Differential seedling growth and tolerance indices reflect drought tolerance in cotton |
title_full_unstemmed | Differential seedling growth and tolerance indices reflect drought tolerance in cotton |
title_short | Differential seedling growth and tolerance indices reflect drought tolerance in cotton |
title_sort | differential seedling growth and tolerance indices reflect drought tolerance in cotton |
topic | Research |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9277823/ https://www.ncbi.nlm.nih.gov/pubmed/35820810 http://dx.doi.org/10.1186/s12870-022-03724-4 |
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