Vessel diameter–stem diameter scaling across woody angiosperms and the ecological causes of xylem vessel diameter variation
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چکیده
منابع مشابه
Vessel diameter-stem diameter scaling across woody angiosperms and the ecological causes of xylem vessel diameter variation.
Variation in angiosperm vessel diameter is of major functional significance. In the light of recent models predicting optimal vessel taper given resistance imposed by conductive path length, we tested the prediction that plant size should predict vessel diameter, with dryland plants having narrower vessels for their stem sizes. We assembled a comparative dataset including vessel and stem diamet...
متن کاملScaling of Xylem Vessel Diameter with Plant Size: Causes, Predictions, and Outstanding Questions
Purpose of Review This review shows that a more or less constant rate of tip-to-base vessel widening across species, together with the assumption that wider vessels are more vulnerable to embolism, suggests how climate should limit maximum vegetation height; together, these two factors predict a maximummean vessel diameter permitted by temperature and water availability at a site and thus maxim...
متن کاملConvergent Vessel Diameter–stem Diameter Scaling across Five Clades of New and Old World Eudicots from Desert to Rain Forest
*Instituto de Biologı́a, Universidad Nacional Autónoma de México, Tercer Circuito s/n de Ciudad Universitaria, México DF 04510, Mexico; †Department of Biological Sciences, Macquarie University, North Ryde, New South Wales 2109, Australia; ‡Instituto de Investigaciones en Matemáticas Aplicadas y en Sistemas, Universidad Nacional Autónoma de México, Circuito Escolar s/n de Ciudad Universitaria, Mé...
متن کاملAn ecophysiological and developmental perspective on variation in vessel diameter.
Variation in xylem vessel diameter is one of the most important parameters when evaluating plant water relations. This review provides a synthesis of the ecophysiological implications of variation in lumen diameter together with a summary of our current understanding of vessel development and its endogenous regulation. We analyzed inter-specific variation of the mean hydraulic vessel diameter (...
متن کاملXylem Vessel Diameter Affects the Compartmentalization of the Vascular Pathogen Phaeomoniella chlamydospora in Grapevine
Fungal wilt diseases are a threat to global food safety. Previous studies in perennial crops showed that xylem vessel diameter affects disease susceptibility. We tested the hypothesis that xylem vessel diameter impacts occlusion processes and pathogen compartmentalization in Vitis vinifera L. We studied the interaction between four grape commercial cultivars with the vascular wilt pathogen Phae...
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ژورنال
عنوان ژورنال: New Phytologist
سال: 2012
ISSN: 0028-646X,1469-8137
DOI: 10.1111/nph.12097