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Functional relationship between photosynthetic leaf gas exchange in response to silicon application and water stress mitigation in sugarcane

文献类型： 外文期刊

作者： Verma, Krishan K. 1 ; Song, Xiu-Peng 1 ; Verma, Chhedi Lal 2 ; Chen, Zhong-Liang 1 ; Rajput, Vishnu D. 4 ; Wu, Kai- 1 ;

作者机构： 1.Chinese Acad Agr Sci, Key Lab Sugarcane Biotechnol & Genet Improvement, Sugarcane Res Ctr,Guangxi Key Lab Sugarcane Genet, Minist Agr & Rural Affairs,Guangxi Acad Agr Sci, Nanning 530007, Guangxi, Peoples R China

2.ICAR Cent Soil Salin Res Inst, Reg Res Stn, Irrigat & Drainage Engn, Lucknow 226005, Uttar Pradesh, India

3.Guangxi Univ, Coll Agr, Nanning 530004, Peoples R China

4.Southern Fed Univ, Acad Biol & Biotechnol, Rostov Na Donu 344090, Russia

5.Guangxi Acad Agr Sci, Inst Biotechnol, Nanning 530007, Guangxi, Peoples R China

关键词： Photosynthetic leaf gas exchange; Bio-modelling; Silicon; Sugarcane; Water stress

期刊名称：BIOLOGICAL RESEARCH （ 影响因子：3.092； 五年影响因子：2.968 ）

ISSN： 0716-9760

年卷期： 2021 年 54 卷 1 期

页码：

收录情况： SCI

摘要： Background Water stress is one of the serious abiotic stresses that negatively influences the growth, development and production of sugarcane in arid and semi-arid regions. However, silicon (Si) has been applied as an alleviation strategy subjected to environmental stresses. Methods In this experiment, Si was applied as soil irrigation in sugarcane plants to understand the mitigation effect of Si against harmful impact of water stress on photosynthetic leaf gas exchange. Results In the present study we primarily revealed the consequences of low soil moisture content, which affect overall plant performance of sugarcane significantly. Silicon application reduced the adverse effects of water stress by improving the net photosynthetic assimilation rate (A(net)) 1.35-18.75%, stomatal conductance to water vapour (gs) 3.26-21.57% and rate of transpiration (E) 1.16-17.83%. The mathematical models developed from the proposed hypothesis explained the functional relationships between photosynthetic responses of Si application and water stress mitigation. Conclusions Silicon application showed high ameliorative effects on photosynthetic responses of sugarcane to water stress and could be used for mitigating environmental stresses in other crops, too, in future.

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