Genotypic Divergence, Photosynthetic Efficiency, Sodium Extrusion, and Osmoprotectant Regulation Conferred Salt Tolerance in Sorghum

Ashaduzzaman Sagar; Sabibul Haque; Alamgir Hossain; Nesar Uddin; Jannat E. Tajkia; Ashik Mia; Toufika Hossain Shabi; Solaiman Ali Fakir; Abdul Kader; Walid Soufan; Atikur Rahman; Muhammad Aamir Iqbal; Mohammad Sohidul Islam; Ayman El Sabagh; A. K. M. Zakir Hossain

doi:10.32604/phyton.2023.028974

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Genotypic Divergence, Photosynthetic Efficiency, Sodium Extrusion, and Osmoprotectant Regulation Conferred Salt Tolerance in Sorghum

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Genotypic Divergence, Photosynthetic Efficiency, Sodium Extrusion, and Osmoprotectant Regulation Conferred Salt Tolerance in Sorghum

Ashaduzzaman Sagar, Sabibul Haque, Alamgir Hossain, Nesar Uddin, Jannat E. Tajkia, Ashik Mia, Toufika Hossain Shabi, Solaiman Ali Fakir, Abdul Kader, Walid Soufan, …

Phyton (Buenos Aires), Vol.92(8), pp.2349-2368

2023

DOI: https://doi.org/10.32604/phyton.2023.028974

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Abstract

Life Sciences & Biomedicine

Plant Sciences

Science & Technology

Salt stress is one of the major limitations to modern agriculture that negatively influences plant growth and productivity. Salt tolerant cultivar can provide excellent solution to enhance stress tolerance with plant fitness to unfavorable environments. Therefore, this study was aimed to screen salt tolerant sorghum genotypes through evaluating of different morphological, biochemical, and physiological attributes in response to salinity stress. In this study, we have been evaluated total six sorghum genotypes including Hybrid sorgo, Debgiri, BD-703, BD-706, BD-707, and BD-725 under salt stress (12 dS m-1 NaCl). The response variables included length and weight of root and shoot, root: shoot ratio (RSR), photosynthesis (A), transpiration rate (E), elemental concen-trations (K+, Na+ and K+/Na+), photochemical efficiency of photosystem II (Fv/Fm), water use efficiency (WUE) and pigment content (chlorophyll a, and b). The results revealed that saline environment significantly reduced all response variables under study of sorghum genotypes, however, Hybrid sorgo remained unmatched by recording the maximum root and shoot traits. The same genotype recorded higher photosynthetic efficiency which was attributed to Na+ extrusion, K+ uptake and higher K+/Na+ ratio (1.8 at stress), while these mechanisms were not fully active in rest of genotypes. Moreover, this study also implies the involvement of proline in impart-ing tolerance against saline environment in Hybrid sorgo genotype. Overall, BD-703 remained the most salt sen-sitive genotype as evident from the minimum morphological growth traits and the least biosynthesis of osmoprotectants. These findings open new research avenues for salt stress alleviation by identifying elite salt -tolerant genotypes of sorghum for breeding programs.

Details

Title: Genotypic Divergence, Photosynthetic Efficiency, Sodium Extrusion, and Osmoprotectant Regulation Conferred Salt Tolerance in Sorghum
Authors/Creators: Ashaduzzaman Sagar - Bangladesh Agr Univ, Dept Crop Bot, Mymensingh 2202, Bangladesh
Sabibul Haque - Bangladesh Agr Univ, Dept Crop Bot, Mymensingh 2202, Bangladesh
Alamgir Hossain - Bangladesh Agr Univ, Dept Crop Bot, Mymensingh 2202, Bangladesh
Nesar Uddin - Bangladesh Agr Univ, Dept Crop Bot, Mymensingh 2202, Bangladesh
Jannat E. Tajkia - Bangladesh Agr Univ, Dept Crop Bot, Mymensingh 2202, Bangladesh
Ashik Mia - Bangladesh Agr Univ, Dept Crop Bot, Mymensingh 2202, Bangladesh
Toufika Hossain Shabi - Bangladesh Inst Nucl Agr, Planning & Dev Div, Mymensingh 2202, Bangladesh
Solaiman Ali Fakir - Bangladesh Agr Univ, Dept Crop Bot, Mymensingh 2202, Bangladesh
Abdul Kader - Bangladesh Agr Univ, Dept Soil Sci, Mymensingh 2202, Bangladesh
Walid Soufan - King Saud University
Atikur Rahman - Rural Dev Adm, Natl Inst Anim Sci, Grassland & Forage Div, Cheonan 31000, South Korea
Muhammad Aamir Iqbal - Univ Poonch Rawalakot, Fac Agr, Dept Agron, Rawalakot 12350, Pakistan
Mohammad Sohidul Islam - Hajee Mohammad Danesh Sci & Technol Univ, Dept Agron, Dinajpur, Bangladesh
Ayman El Sabagh - Kafrelsheikh University
A. K. M. Zakir Hossain - Bangladesh Agr Univ, Dept Crop Bot, Mymensingh 2202, Bangladesh
Publication Details: Phyton (Buenos Aires), Vol.92(8), pp.2349-2368
Publisher: Tech Science Press
Number of pages: 20
Grant note: RSP2023R390 / King Saud University, Riyadh, Saudi Arabia; King Saud University Ministry of Science and Technology, Bangladesh, through the National Science and Technology Fellowship
Identifiers: 991005585968707891
Murdoch Affiliation: School of Agricultural Sciences
Language: English
Resource Type: Journal article

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Collaboration types: Domestic collaboration; International collaboration
Citation topics: 3 Agriculture, Environment & Ecology; 3.4 Crop Science; 3.4.49 Plant Stress Responses
Web Of Science research areas: Plant Sciences
ESI research areas: Plant & Animal Science