Economic optimization to guide climate water stress adaptation

Plastid-to-nucleus retrograde signalling coordinates nuclear gene expression with chloroplast function and is essential for the photoautotrophic life-style of plants. The relationship between plastid signalling and water stress response was investigated with genome uncoupled (gun) mutants, gun1, gun3, and gun5, and an abscisic acid (ABA)-responsible transcription factor mutant, abi4. The results showed that gun1, gun3, gun5, and abi4 mutants suffered from more oxidative damages than the wild-type plants under the water stress and the water stress + herbicide (norflurazon, NF) co-treatment. Superoxide dismutase (SOD), peroxidase (POD), and ascorbate peroxidase (APX) activities could not be prompted in the plastidsignalling defective mutants under the stress conditions. At the same time, Lhcb expression was not repressed in the plastid-signalling defective mutants by the NF treatment or water stress. Therefore, the photosynthetic apparatus in the mutant cells could not be closed during the stresses and the excessive light caused more photodamages on the mutant leaves. The roles of GUN1, GUN3, GUN5 and ABI4 proteins in environmental stress adaptation have been discussed.

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Effects of elevated CO2 and water stress on the adaptation of stomata and gas exchange in leaves of eggplants (Solanum melongena L.)

Bangladesh Journal of Botany ◽

10.3329/bjb.v40i1.7985 ◽

1970 ◽

Vol 40 (1) ◽

pp. 1-8 ◽

Cited By ~ 1

Author(s):

Bikash C Sarker ◽

Michihiro Hara

Keyword(s):

Water Stress ◽

Gas Exchange ◽

Elevated Co2 ◽

Stomatal Density ◽

Solanum Melongena ◽

Stress Adaptation ◽

Leaf Photosynthesis ◽

Stomatal Morphology ◽

Stomatal Length ◽

Ambient Co2

Effects and possible interaction of elevated CO2 and water stress on the stomatal morphology and the pattern of gas exchange in leaves of eggplants (Solanum melongena L. cv. Senryo No. 2) were investigated. Sedlings were grown to maturity in controlled growth chamber using ambient CO2 (365~370 ppm) and elevated CO2 (700 ppm) and at frequent watering as control and watering after every 21 days for simulating periodic water stress and recovery from stress. A complementary acclimatisation of photosynthesis in water stressed eggplants grown under elevated CO2 was evident. Despite decreased stomatal conductance and transpiration rate under elevated CO2 conditions, increased net leaf photosynthesis rate was observed. Stomatal length and width decreased under water stress and increased CO2.Key words: Water stress; Adaptation; Eggplant; Gas exchange; Stomatal density; Transpiration rateDOI: http://dx.doi.org/10.3329/bjb.v40i1.7985 Bangladesh J. Bot. 40(1): 1-8, 2011 (June)

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Gene expression associated with water-stress adaptation of rice cells and identification of two genes as hsp 70 and ubiquitin

Physiologia Plantarum ◽

10.1034/j.1399-3054.1991.820318.x ◽

1991 ◽

Vol 82 (3) ◽

pp. 449-457 ◽

Cited By ~ 3

Author(s):

Chumpel Borkird ◽

Chris Simoens ◽

Raimundo Villarroel ◽

Marc Van Montagu

Keyword(s):

Gene Expression ◽

Water Stress ◽

Stress Adaptation ◽

Hsp 70

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Household Water Stress, Adaptation and Resilience in Some Selected Peri-urban and Rural Communities of Oyo State, Nigeria

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/654/1/012006 ◽

2021 ◽

Vol 654 (1) ◽

pp. 012006

Author(s):

Ayobami Popoola ◽

Hangwelani Magidimisha-Chipingu ◽

Lovemore Chipungu ◽

Bamiji Adeleye ◽

Olawale Akogun ◽

...

Keyword(s):

Water Stress ◽

Rural Communities ◽

Stress Adaptation ◽

Household Water

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Research Article Water stress adaptation of popcorn roots and association with agronomic traits

Genetics and Molecular Research ◽

10.4238/gmr18078 ◽

2018 ◽

Vol 17 (3) ◽

Cited By ~ 1

Author(s):

S. H. Kamphorst ◽

V. J. de Lima ◽

K. F. M. Schimitt ◽

J. T. Leite ◽

V. C. Azeredo ◽

...

Keyword(s):

Water Stress ◽

Agronomic Traits ◽

Stress Adaptation ◽

Research Article

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Wild emmer introgressions alter root-to-shoot growth dynamics in response to water stress

10.1101/2020.06.17.157461 ◽

2020 ◽

Cited By ~ 1

Author(s):

Harel Bacher ◽

Feiyu Zhu ◽

Tian Gao ◽

Kan Liu ◽

Balpreet K Dhatt ◽

...

Keyword(s):

Water Stress ◽

Growth Dynamics ◽

Introgression Line ◽

Wild Emmer ◽

Shoot Biomass ◽

Stress Adaptation ◽

Limiting Factor ◽

High Plasticity ◽

Growth Responses ◽

Response To Water

AbstractWater deficit is a major limiting factor for wheat (Triticum sp.) development and productivity. One approach to increase water stress adaptation in wheat is incorporating novel alleles from the drought-adapted wheat progenitor, wild emmer (T. turgidum ssp. dicoccoides). We explored this idea in the context of vegetative growth by examining the phenotypic consequence of a series of wild emmer (acc. Zavitan) introgressions into elite durum wheat (cv. Svevo) under water-limited conditions. Using image-based phenotyping we cataloged divergent (from Svevo) growth responses to water stress ranging from high plasticity to high stability among the introgression lines. We identified an introgression line (IL20) that exhibits a highly plastic response to water stress by shifting its root-to-shoot biomass ratio for detailed characterization. By combining genotypic information with root transcriptome analysis, we propose several candidate genes (including a root-specific kinase) that can confer the shoot-to-root carbon resource allocation in IL20 under water stress. Discovery of high plasticity trait in IL20 in response to water stress highlights the potential of wild introgressions for enhancing stress adaptation via mechanisms that may be absent or rare in elite breeding material.

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