Leaf hydraulic vulnerability triggers the decline in stomatal and mesophyll conductance during drought in rice
نویسندگان
چکیده
منابع مشابه
Combined impacts of irradiance and dehydration on leaf hydraulic conductance: insights into vulnerability and stomatal control.
The leaf is a hydraulic bottleneck, accounting for a large part of plant resistance. Thus, the leaf hydraulic conductance (K(leaf) ) is of key importance in determining stomatal conductance (g(s) ) and rates of gas exchange. Previous studies showed that K(leaf) is dynamic with leaf water status and irradiance. For four species, we tested the combined impacts of these factors on K(leaf) and on g...
متن کاملLeaf mesophyll conductance and leaf hydraulic conductance: an introduction to their measurement and coordination.
Two highly contrasting variables summarizing the efficiency of transport of materials within the leaf are recognized as playing central roles in determining gas exchange and plant performance. This paper summarizes current approaches for the measurement of mesophyll conductance to CO2 (g m) and leaf hydraulic conductance (K leaf) and addresses the physiological integration of these parameters. ...
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The structure of leaf vasculature viewed over a broad phylogenetic scale from lycophytes to eudicots correlates with stomatal conductance, providing the basis for the hypothesis that increasing vein density drove the evolution of high fluxes in angiosperms. Yet, the relationship between vascular geometry and gas fluxes breaks down at finer phylogenetic scales. In this Update, we derive a simple...
متن کاملLow leaf hydraulic conductance associated with drought tolerance in soybean.
Lack of water is the most serious environmental constraint on agricultural production. More efficient use of water resources is a key solution for increased plant productivity in water-deficit environments. We examined the hydraulic characteristics of a 'slow wilting' phenotype in soybean (Glycine max Merr.), PI 416937, which has been shown to have relatively constant transpiration rates above ...
متن کاملPartitioning hydraulic resistance in Sorghum bicolor leaves reveals unique correlations with stomatal conductance during drought
The hydraulic architecture of leaves represents the final path along which liquid water travels through the plant and comprises a significant resistance for water movement, especially for grasses. We partitioned leaf hydraulic resistance of six genotypes of Sorghum bicolor L. (Moench) into leaf specific hydraulic resistance within the large longitudinal veins (rLV) and outside the large veins (...
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ژورنال
عنوان ژورنال: Journal of Experimental Botany
سال: 2018
ISSN: 0022-0957,1460-2431
DOI: 10.1093/jxb/ery188