Limited-transpiration response to high vapor pressure deficit in crop species

Sinclair, Thomas R.; Devi, Mura Jyostna; Shekoofa, Avat; Choudhary, Sunita; Sadok, Moufida; Vadez, Vincent; Riar, Mandeep K.; Rufty, Thomas W.

doi:10.1016/j.plantsci.2017.04.007

Cited by 119 publications

(90 citation statements)

References 76 publications

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“…In plants not exposed to Al, the increase in VPD led to an increase in E throughout the study (Fig. 1G), following the model proposed by most studies (Peak and Mott, 2011;Sinclair et al, 2017). In plants exposed to Al, E was higher under 2.5 kPa when compared to 1.5 kPa, but only until 45 DAP, being unresponsive to the increase in VPD at 60 and 90 Fig.…”

Section: Water Relationssupporting

confidence: 79%

Aluminum prevents stomatal conductance from responding to vapor pressure deficit in Citrus limonia

Silva

Gavassi

Nogueira

et al. 2018

Environmental and Experimental Botany

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Stomatal aperture generally increases in response to low vapor pressure deficit (VPD) and decreases at high VPD. Aluminum (Al) inhibits root growth, indirectly exposing the roots to low water availability, which may decrease leaf hydration and, consequently, the stomatal conductance (gs). In this study, Citrus limonia ('Rangpur' lime) was grown in nutrient solution with 1480 μM Al for 90 days, and we expected that the presence of Al could prevent gs from responding to VPD. As expected, gs did not respond to the increase in VPD in plants exposed to Al. Aluminum also reduced the relative water content and midday leaf water potential (Ψmd) after 60 and 90 days. The CO 2 assimilation rate (A) followed the same response pattern exhibited by gs, the estimation of the carboxylation efficiency was not reduced in plants exposed to Al and measured under drier air, while photochemical responses were slightly reduced in plants exposed to Al, indicating that the Al-induced decrease in A was dependent on gs and less ascribed to low photochemical performance. Like in drought conditions, the longterm exposure to Al reduces leaf hydration and compromises gs responses to the atmosphere, eventually impairing A in 'Rangpur' lime plants.

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Section: Water Relationssupporting

confidence: 79%

Aluminum prevents stomatal conductance from responding to vapor pressure deficit in Citrus limonia

Silva

Gavassi

Nogueira

et al. 2018

Environmental and Experimental Botany

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“…Limiting transpiration when VPD is the highest can increase daily transpiration efficiency and then increase the proportion of water that is used during reproductive stages of crop development, which is critical for yield determination under water stress [8,[49][50][51]. The restriction in transpiration under high VPD was previously reported in maize [34], sorghum [52,42] and pearl millet [43], reviewed [24,53], and used for simulation studies [20,29,54]. However, there are an increasing number of reports showing that consistent identification of this trait is difficult and likely interacts with the growth environment of the crop prior to the transient exposure to increasing VPD [35][36][37][55][56][57][58], especially in C 4 species where surrogate measurements of transpiration rate have been of limited use [59].…”

Section: Vpd Conditions During Growth Affect Plant Transpiration Respmentioning

confidence: 91%

Maize, sorghum, and pearl millet have highly contrasting species strategies to adapt to water stress and climate change-like conditions

et al. 2020

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This study compared maize, sorghum and pearl-millet, leading C 4 cereals, for the transpiration rate (TR) response to increasing atmospheric and soil water stress. The TR response to transiently increasing VPD (0.9-4.1 kPa) and the transpiration and leaf area expansion response to progressive soil drying were measured in controlled conditions at early vegetative stage in 10-16 genotypes of each species grown in moderate or high vapor pressure deficit (VPD) conditions. Maize grown under moderate VPD conditions restricted TR under high VPD, but not sorghum and pearl millet. By contrast, when grown under high VPD, all species increased TR upon increasing VPD, suggesting a loss of TR responsiveness. Sorghum and pearl-millet grown under high VPD reduced leaf area, but not maize. Upon progressive soil drying, maize reduced transpiration at higher soil moisture than sorghum and pearl millet, especially under high VPD, and leaf area expansion declined at similar or lower soil moisture than transpiration in maize and sorghum. It is concluded that maize conserves water by restricting transpiration upon increasing VPD and under higher soil moisture than sorghum and millet, giving maize significantly higher TE, whereas sorghum and pearl millet rely mostly on reduced leaf area and somewhat on transpiration restriction.

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“…The authors of [24] explored links between plant N and phosphorous (P) status and the persistence of BNF by legumes. Broader perspectives are offered by reviews of limited-transpiration trait(s) and their potential use in agriculture (including non-legumes and legumes) [25], and of the biogeography of agricultural and nonagricultural legume species and that of their N-fixing symbionts [26]. Finally, a major compilation of a global data for grain legume production includes a range of attributes that can be used to help identify many of the key features of legume crops [27].…”

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confidence: 99%