Eco-Physiological Traits of Leaves from Basal Angiosperm <em>Machilus</em> Species with Localized and Widespread Distribution

CAO Jing-Ting; ZHU Shi-Dan; WEN Yin; CAO Kun-Fang

doi:10.11913/PSJ.2095-0837.2016.50790

Plant Science Journal > 2016 > 34(5): 790-797. > DOI: 10.11913/PSJ.2095-0837.2016.50790 CSTR: 32231.14.PSJ.2095-0837.2016.50790

CAO Jing-Ting, ZHU Shi-Dan, WEN Yin, CAO Kun-Fang. Eco-Physiological Traits of Leaves from Basal Angiosperm Machilus Species with Localized and Widespread Distribution[J]. Plant Science Journal, 2016, 34(5): 790-797. DOI: 10.11913/PSJ.2095-0837.2016.50790

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Eco-Physiological Traits of Leaves from Basal Angiosperm Machilus Species with Localized and Widespread Distribution

i>State Key Laboratory of Conservation and Utilization of Subtropical Agro-Bioresources, College of Forestry, Guangxi University, Nanning, Guangxi 530004, China

Funds: This work was supported by a grant from the National Natural Science Foundation of China (31470469).

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Received Date: March 30, 2016
Revised Date: April 17, 2016
Published Date: October 27, 2016

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Abstract

Abstract

Machilus species are basal angiosperms, which are mostly distributed in humid tropical and subtropical forest habitats, though a few species are widely distributed. In this study, we measured hydraulic-related traits of sapling leaves from 11 Machilus species, which included leaf mass per area, leaf density, stomatal density, vein density, leaf turgor loss point, and palisade and spongy tissue thickness. We found that, on average, Machilus species had lower vein density compared with that of other tropical and subtropical angiosperms, indicating this trait was strongly influenced by evolution. Leaf vein density was positively and significantly correlated with stomatal density and the ratio of palisade to spongy tissue thickness, indicating the balance between leaf water transpirational demand and supply. Compared with localized species, widespread species were more drought-tolerant and exhibited lower turgor loss point and higher leaf density. Turgor loss point was negatively and significantly correlated with maximum tree height across species, indicating that leaf drought resistance was controlled by genetics. Our study suggests that leaf hydraulic traits can be used to explain the geographical distribution of Machilus species.
- Machilus species,
- Turgor loss point,
- Geographical distribution,
- Leaf anatomy,
- Water balance

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References (47)

References

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