Developmental control of xylem hydraulic resistances and vulnerability to embolism in Fraxinus excelsior L.: impacts on water relations
نویسندگان
چکیده
منابع مشابه
Vulnerability of Xylem to Cavitation and Embolism
WATER RELATIONS AND THE VULNERABLE PIPELINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 EARLY EFFORTS TO DETECT CAVITATION AND EMBOLISM . . . . . . . . . . . . . . . . . . . . . 21 ACOUSTIC DETECTION OF CAVITATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Audio (Low-Frequency) Detection . . . . . . . . . . . . . . . ....
متن کاملOutside-Xylem Vulnerability, Not Xylem Embolism, Controls Leaf Hydraulic Decline during Dehydration1[CC-BY]
Department of Ecology and Evolutionary Biology, University of California, Los Angeles, California, 90095 (C.S., S.V.T., G.P.J., M.K.B., L.S.); Department of Biology, Utah State University, Logan, Utah 84322 (C.S.); Department of Viticulture and Enology, University of California, Davis, California 95616 (C.A., A.J.M.); School of Forestry and Environmental Studies, Yale University, New Haven, Con...
متن کاملOutside-Xylem Vulnerability, Not Xylem Embolism, Controls Leaf Hydraulic Decline during Dehydration.
Leaf hydraulic supply is crucial to maintaining open stomata for CO2 capture and plant growth. During drought-induced dehydration, the leaf hydraulic conductance (Kleaf) declines, which contributes to stomatal closure and, eventually, to leaf death. Previous studies have tended to attribute the decline of Kleaf to embolism in the leaf vein xylem. We visualized at high resolution and quantified ...
متن کاملDrought effects on hydraulic conductivity and xylem vulnerability to embolism in diverse species and provenances of Mediterranean cedars.
We studied hydraulic traits of young plants of the Mediterranean cedar species Cedrus atlantica (Endl.) G. Manetti ex Carrière (Luberon, France), C. brevifolia (Hook. f.) Henry (Cyprus), C. libani A. Rich (Hadeth El Jebbe, Lebanon) and C. libani (Armut Alani, Turkey). With an optimum water supply, no major differences were observed among species or provenances in either stem hydraulic conductiv...
متن کاملA method for measuring hydraulic conductivity and embolism in xylem
Hydraulic conductivity of the xylem is computed as the quotient of mass fiow rate and pressure gradient. Measurements on excised plant stems can be difficult to interpret because of timedependent reductions in fiow rate, and because of variable degrees of embolism. Using Acer saccharum Marsh, stems, we found that certain perfusing solutions including dilute fixatives (e.g. 0.05% formaldehyde) a...
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ژورنال
عنوان ژورنال: Journal of Experimental Botany
سال: 1997
ISSN: 0022-0957,1460-2431
DOI: 10.1093/jxb/48.3.655