scholarly journals Overexpression of an aquaporin gene PvPIP2;9 improved biomass yield, protein content, drought tolerance and water use efficiency in switchgrass ( Panicum virgatum L.)

GCB Bioenergy ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 979-991
Author(s):  
Jing Zhang ◽  
Wuwu Wen ◽  
Hui Li ◽  
Qiyu Lu ◽  
Bin Xu ◽  
...  
Keyword(s):  
Drought Tolerance ◽  
Water Use Efficiency ◽  
Protein Content ◽  
Water Use ◽  
Panicum Virgatum ◽  
Biomass Yield ◽  
Panicum Virgatum L ◽  
Aquaporin Gene ◽  
Use Efficiency

scholarly journals Overexpression of an aquaporin gene PvPIP2;9 increased biomass yield and protein content, improved drought tolerance and water use efficiency and affected other PIP2 genes’ expression in switchgrass (Panicum virgatum L.)

2020 ◽  
Author(s):  
Jing Zhang ◽  
Wuwu Wen ◽  
Hui Li ◽  
Qiyu Lu ◽  
Bin Xu ◽  
...  
Keyword(s):  
Drought Tolerance ◽  
Water Use Efficiency ◽  
Water Use ◽  
Panicum Virgatum ◽  
Biomass Yield ◽  
Drought Treatment ◽  
Water Transportation ◽  
Panicum Virgatum L ◽  
Aquaporin Gene ◽  
Use Efficiency

Abstract Background: Switchgrass ( Panicum virgatum L.) is a prime candidate for non-grain-based bioenergy feedstock production. Improved drought tolerance and higher water use efficiency are important for its successful field establishment and production, especially on marginal lands. Aquaporins are key channels and regulators for water transportation and maintenance of cellular water status. In this study, the functional role of an aquaporin gene, PvPIP2;9 , in switchgrass was studied. Results: Expression of PvPIP2;9 was regulated by diurnal oscillation and osmotic stress. Constitutive over-expressing PvPIP2;9 in switchgrass significantly improved its leaf length, plant height, above-ground biomass, biomass protein contents, and cellulose contents in stressed plants. Under 21 days of drought treatment, transgenic plants showed less electrolyte leakage rates, but higher relative water contents, photochemical efficiencies, and chlorophyll contents, indicating that PvPIP2;9 positively regulated plant drought tolerance and water use efficiency. Moreover, expression patterns of all 14 switchgrass PIP2 subfamily genes were checked during the drought treatment, and the result showed that over-expressing PvPIP2;9 also affected transcript levels of most other PIP2 genes. Conclusions: Together, this study showed that improved biomass yield, drought tolerance and higher water use efficiency can be achieved by manipulating the expression level of PvPIP2;9 and also suggested PIP2 subfamily genes were transcriptionally regulated in a coordinated manner.

Overexpression of an aquaporin gene PvPIP2;9 increased leaf length, improved drought tolerance and water use efficiency and affected other PIP2 genes’ expression in switchgrass (Panicum virgatum L.)

2019 ◽  
Author(s):  
Jing Zhang ◽  
Wuwu Wen ◽  
Hui Li ◽  
Qiyu Lu ◽  
Bin Xu ◽  
...  
Keyword(s):  
Drought Tolerance ◽  
Water Use Efficiency ◽  
Water Use ◽  
Panicum Virgatum ◽  
Water Status ◽  
Expression Patterns ◽  
Water Withdrawal ◽  
Water Transportation ◽  
Aquaporin Gene ◽  
Use Efficiency

Abstract Background: Switchgrass (Panicum virgatum L.) is a prime candidate for non-grain-based bioenergy feedstock production. Improved the drought tolerance and higher water use efficiency are important traits for its successful field establishment and production especially in marginal land. Aquaporins are key channels and regulators for water transportation and maintenance of cellular water status. In this study, the functional role of an aquaporin gene, PvPIP2;9, in switchgrass drought tolerance was studied.Results: Expression of PvPIP2;9 was regulated by the diurnal oscillation and osmotic stress. Constitutive over-expressing PvPIP2;9 in switchgrass significantly improved its drought tolerance and water use efficiency with less electrolyte leakage rates but higher relative water contents, photochemical efficiencies, and chlorophyll contents. Moreover, expression patterns of all 14 switchgrass PIP2 subfamily genes were checked in wildtype and transgenic plants during the water-withdrawal treatment, and the result showed that over-expressing PvPIP2;9 also affected transcript levels of most other PIP2 genes. Conclusions: Together, this study showed that improved drought tolerance and higher water use efficiency can be achieved by manipulating the expression level of PvPIP2;9 and also suggested PIP2 subfamily genes were transcriptionally regulated in a coordinated manner.

Effects of Ridge Mulching with Side-dressing on Grain Yield, Protein Content and Water Use Efficiency in Dryland Wheat

2017 ◽  
Vol 43 (6) ◽  
pp. 899 ◽  
Author(s):  
Ming HUANG ◽  
Zhao-Hui WANG ◽  
Lai-Chao LUO ◽  
Sen WANG ◽  
Ming BAO ◽  
...  
Keyword(s):  
Grain Yield ◽  
Water Use Efficiency ◽  
Protein Content ◽  
Water Use ◽  
Use Efficiency

scholarly journals Characterization of wheat genotypes for drought tolerance and water use efficiency

2021 ◽  
Vol 78 (5) ◽  
Author(s):  
Guilherme Filgueiras Soares ◽  
Walter Quadros Ribeiro Júnior ◽  
Lucas Felisberto Pereira ◽  
Cristiane Andréa de Lima ◽  
Daiane dos Santos Soares ◽  
...  
Keyword(s):  
Drought Tolerance ◽  
Water Use Efficiency ◽  
Water Use ◽  
Wheat Genotypes ◽  
Use Efficiency

scholarly journals Effects of Drought Frequency on Growth Performance and Transpiration of Young Black Locust (Robinia pseudoacaciaL.)

2014 ◽  
Vol 2014 ◽  
pp. 1-11 ◽  
Author(s):  
Dario Mantovani ◽  
Maik Veste ◽  
Dirk Freese
Keyword(s):  
Drought Stress ◽  
Drought Tolerance ◽  
Water Use Efficiency ◽  
Growth Performance ◽  
Water Use ◽  
Water Availability ◽  
Black Locust ◽  
Marginal Land ◽  
Drought Tolerant ◽  
Use Efficiency

Black locust (Robinia pseudoacaciaL.) is a drought-tolerant fast growing tree, which could be an alternative to the more common tree species used in short-rotation coppice on marginal land. The plasticity of black locust in the form of ecophysiological and morphological adaptations to drought is an important precondition for its successful growth in such areas. However, adaptation to drought stress is detrimental to primary production. Furthermore, the soil water availability condition of the initial stage of development may have an impact on the tree resilience. We aimed to investigate the effect of drought stress applied during the resprouting on the drought tolerance of the plant, by examining the black locust growth patterns. We exposed young trees in lysimeters to different cycles of drought. The drought memory affected the plant growth performance and its drought tolerance: the plants resprouting under drought conditions were more drought tolerant than the well-watered ones. Black locust tolerates drastic soil water availability variations without altering its water use efficiency (2.57 g L−1), evaluated under drought stress. Due to its constant water use efficiency and the high phenotypic plasticity, black locust could become an important species to be cultivated on marginal land.

Overexpression of an aquaglyceroporin gene from Trichoderma harzianum improves water-use efficiency and drought tolerance in Nicotiana tabacum

2017 ◽  
Vol 121 ◽  
pp. 38-47 ◽  
Author(s):  
Pabline Marinho Vieira ◽  
Mirella Pupo Santos ◽  
Cristiana Moura Andrade ◽  
Otacílio Antônio Souza-Neto ◽  
Cirano José Ulhoa ◽  
...  
Keyword(s):  
Nicotiana Tabacum ◽  
Drought Tolerance ◽  
Water Use Efficiency ◽  
Water Use ◽  
Trichoderma Harzianum ◽  
Use Efficiency
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