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Start Over Subject leaf angle

1. A latitudinal cline in leaf inclination of Dryas octopetala and implications for maximization of whole plant photosynthesis

Creator:
Herbert, T. J.
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
leaf angle and plant modeling
Language:
Multiple languages
Description:
Mean leaf inclination of the arctic and alpine shrub Dryas octopetala is a function of latitude and this functional relationship is consistent with a model that maximizes photosynthesis of the total plant canopy.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

2. Changes in photosynthesis, xanthophyll cycle, and sugar accumulation in two North Australia tropical species differing in leaf angles

Creator:
Xu, S.-M., Liu, L.-X., Woo, K. C., and Wang, D.-L.
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
Acacia, diurnal changes, Eucalyptus, leaf angle, leaf morphology, osmoregulation, and photoprotection
Language:
Multiple languages
Description:
Two tropical species of North Australia, Acacia crassicarpa and Eucalyptus pellita, have similar leaf size and leaf structure but different leaf angles. A. crassicarpa with near vertical leaf angle directly reduced photon absorption and leaf temperature (Tl) and had relatively high photosynthetic activity (Pmax) and low xanthophyll cycle activity. In contrast, E. pellita with a small leaf angle exhibited high Tl, low Pmax, and high activity of xanthophyll cycle which was useful for the dissipation of excessive energy and reduction of photoinhibition. In the dry season, contents of soluble sugars including pinitol, sucrose, fructose, and glucose in A. crassicarpa increased whereas larger amounts of only fructose and glucose were accumulated in E. pellita. Different sugar accumulation may be involved in osmotic adjustment of leaves during water stress that makes photosynthesis more efficient. The leaf angle may be critical for developing different protective mechanisms in these two tropical tree species that ensure optimal growth in the high irradiance and drought stress environment in North Australia. and S.-M. Xu ... [et al.].
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public