Photosynthetic machinery under salinity stress: Trepidations and adaptive mechanisms.

IF 2.1 4区生物学 Q2 PLANT SCIENCES

Photosynthetica Pub Date : 2023-03-14 eCollection Date: 2023-01-01 DOI:10.32615/ps.2023.002

T V Vineeth, G K Krishna, P H Pandesha, L Sathee, S Thomas, D James, K T Ravikiran, S Taria, C John, N M Vinaykumar, B M Lokeshkumar, H S Jat, J Bose, D Camus, S Rathor, S L Krishnamurthy, P C Sharma

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Abstract

Chloroplasts and photosynthesis are the physiologically fateful arenas of salinity stress. Morphological and anatomical alterations in the leaf tissue, ultrastructural changes in the chloroplast, compromise in the integrity of the three-layered chloroplast membrane system, and defects in the light and dark reactions during the osmotic, ionic, and oxidative phases of salt stress are conversed in detail to bring the salinity-mediated physiological alterations in the chloroplast on to a single platform. Chloroplasts of salt-tolerant plants have evolved highly regulated salt-responsive pathways. Thylakoid membrane remodeling, ion homeostasis, osmoprotection, upregulation of chloroplast membrane and stromal proteins, chloroplast ROS scavenging, efficient retrograde signalling, and differential gene and metabolite abundance are the key attributes of optimal photosynthesis in tolerant species. This review throws light into the comparative mechanism of chloroplast and photosynthetic response to salinity in sensitive and tolerant plant species.

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盐度胁迫下的光合机制：恐惧和适应机制。

叶绿体和光合作用是生理上决定盐度胁迫的场所。通过对叶片组织形态学和解剖结构的改变、叶绿体超微结构的改变、三层叶绿体膜系统完整性的破坏以及盐胁迫中渗透、离子和氧化阶段明暗反应的缺陷进行详细的转换，将盐介导的叶绿体生理变化集中到一个平台上。耐盐植物叶绿体进化出高度调控的盐响应途径。类囊体膜重塑、离子稳态、渗透保护、叶绿体膜和基质蛋白的上调、叶绿体ROS清除、有效的逆行信号以及差异基因和代谢物丰度是耐受物种最佳光合作用的关键属性。本文综述了敏感和耐盐植物叶绿体和光合作用对盐度响应的比较机制。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Photosynthetica 生物-植物科学

CiteScore

5.60

自引率

7.40%

发文量

审稿时长

3.8 months

期刊介绍： Photosynthetica publishes original scientific papers and brief communications, reviews on specialized topics, book reviews and announcements and reports covering wide range of photosynthesis research or research including photosynthetic parameters of both experimental and theoretical nature and dealing with physiology, biophysics, biochemistry, molecular biology on one side and leaf optics, stress physiology and ecology of photosynthesis on the other side. The language of journal is English (British or American). Papers should not be published or under consideration for publication elsewhere.