Leaf water use in heterobaric and homobaric leafed canopy tree species in a Malaysian tropical rain forest

Title:

Leaf water use in heterobaric and homobaric leafed canopy tree species in a Malaysian tropical rain forest

Creator:

Inoue, Y., Kenzo, T., Tanaka-Oda, A., Yoneyama, A., and Ichie, T.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:ba19dcdb-f50b-482d-8a31-f8c0649f8686
uuid:ba19dcdb-f50b-482d-8a31-f8c0649f8686
issn:0300-3604
doi:10.1007/s11099-015-0105-6

Subject:

fotosyntéza, dvojkřídláčovité, photosynthesis, Dipterocarpaceae, Malajsie, Malaysia, bundle-sheath extension, gas exchange, leaf morphology, wood density, canopy tree, 2, and 581

Type:

model:article and TEXT

Format:

print, bez média, and svazek

Description:

Tropical canopy tree species can be classified into two types by their heterobaric and homobaric leaves. We studied the relation between both leaf types and their water use, together with the morphological characteristics of leaves and xylem, in 23 canopy species in a tropical rain forest. The maximum rates of photosynthesis and transpiration were significantly higher in heterobaric leaf species, which also underwent larger diurnal variations of leaf water potential compared to homobaric leaf species. The vessel diameter was significantly larger and the stomatal pore index (SPI) was significantly higher in heterobaric than that in homobaric leaf species. There was a significant positive correlation between the vessel diameter, SPI, and maximum transpiration rates in all the studied species of both leaf types. However, there was no significant difference in other properties, such as leaf water-use efficiency, leaf mass per area, leaf nitrogen content, and leaf δ13C between heterobaric and homobaric leaf species. Our results indicate that leaf and xylem morphological differences between heterobaric and homobaric leaf species are closely related to leaf water-use characteristics, even in the same habitat: heterobaric leaf species achieved a high carbon gain with large water use under strong light conditions, whereas homobaric leaf species can maintain a high leaf water potential even at midday as a result of low water use in the canopy environment., Y. Inoue, T. Kenzo, A. Tanaka-Oda, A. Yoneyama, T. Ichie., and Obsahuje bibliografii

Language:

Multiple languages

Rights:

http://creativecommons.org/licenses/by-nc-sa/4.0/
policy:public

Coverage:

177-186

Source:

Photosynthetica | 2015 Volume:53 | Number:2

Harvested from:

CDK

Metadata only:

false