The occurrence of crassulacean acid metabolism in Cymbidium (Orchidaceae) and its ecological and evolutionary implications

H. Motomura, T. Yukawa, Ueno Osamu, A. Kagawa

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

Crassulacean acid metabolism (CAM) is one of the photosynthetic pathways regarded as adaptations to water stress in land plants. Little is known about correlations among the level of CAM activity, environment of habitat, life form, and phylogenetic relationship of a plant group from an evolutionary perspective. We examined these relationships in 18 species of Cymbidium (Orchidaceae) because the genus shows distinctive diversification of habitats and life forms. The photosynthetic type was classed into three categories, strong CAM, weak CAM, and C3 on the basis of CAM activity. CAM expression in Cymbidium was confined to the epiphytic and lithophytic species. Especially, all of these species from tropical to subtropical rainforest exhibited CAM activity. On the other hand, the terrestrial species always exhibited C3 metabolism irrespective of their varied habitats. Regarding the evolution of photosynthetic characters, weak CAM was the ancestral state in Cymbidium and strong CAM and C3 metabolism occurred subsequently. The evolution of strong CAM likely enabled Cymbidium to extend to exposed sites in tropical lowland where marked water stress exists. Further, different levels of CAM activity characterized each species and such potential plasticity of CAM may realize the radiation of Cymbidium into sites with different environmental conditions.

Original languageEnglish
Pages (from-to)163-177
Number of pages15
JournalJournal of Plant Research
Volume121
Issue number2
DOIs
Publication statusPublished - Mar 1 2008

Fingerprint

Cymbidium
Crassulacean acid metabolism
Orchidaceae
water stress
habitats
metabolism
embryophytes
rain forests
lowlands

All Science Journal Classification (ASJC) codes

  • Plant Science

Cite this

The occurrence of crassulacean acid metabolism in Cymbidium (Orchidaceae) and its ecological and evolutionary implications. / Motomura, H.; Yukawa, T.; Osamu, Ueno; Kagawa, A.

In: Journal of Plant Research, Vol. 121, No. 2, 01.03.2008, p. 163-177.

Research output: Contribution to journalArticle

Motomura, H. ; Yukawa, T. ; Osamu, Ueno ; Kagawa, A. / The occurrence of crassulacean acid metabolism in Cymbidium (Orchidaceae) and its ecological and evolutionary implications. In: Journal of Plant Research. 2008 ; Vol. 121, No. 2. pp. 163-177.
@article{12a439ba6a6d4907ab47315857435a92,
title = "The occurrence of crassulacean acid metabolism in Cymbidium (Orchidaceae) and its ecological and evolutionary implications",
abstract = "Crassulacean acid metabolism (CAM) is one of the photosynthetic pathways regarded as adaptations to water stress in land plants. Little is known about correlations among the level of CAM activity, environment of habitat, life form, and phylogenetic relationship of a plant group from an evolutionary perspective. We examined these relationships in 18 species of Cymbidium (Orchidaceae) because the genus shows distinctive diversification of habitats and life forms. The photosynthetic type was classed into three categories, strong CAM, weak CAM, and C3 on the basis of CAM activity. CAM expression in Cymbidium was confined to the epiphytic and lithophytic species. Especially, all of these species from tropical to subtropical rainforest exhibited CAM activity. On the other hand, the terrestrial species always exhibited C3 metabolism irrespective of their varied habitats. Regarding the evolution of photosynthetic characters, weak CAM was the ancestral state in Cymbidium and strong CAM and C3 metabolism occurred subsequently. The evolution of strong CAM likely enabled Cymbidium to extend to exposed sites in tropical lowland where marked water stress exists. Further, different levels of CAM activity characterized each species and such potential plasticity of CAM may realize the radiation of Cymbidium into sites with different environmental conditions.",
author = "H. Motomura and T. Yukawa and Ueno Osamu and A. Kagawa",
year = "2008",
month = "3",
day = "1",
doi = "10.1007/s10265-007-0144-6",
language = "English",
volume = "121",
pages = "163--177",
journal = "Journal of Plant Research",
issn = "0918-9440",
publisher = "Springer Japan",
number = "2",

}

TY - JOUR

T1 - The occurrence of crassulacean acid metabolism in Cymbidium (Orchidaceae) and its ecological and evolutionary implications

AU - Motomura, H.

AU - Yukawa, T.

AU - Osamu, Ueno

AU - Kagawa, A.

PY - 2008/3/1

Y1 - 2008/3/1

N2 - Crassulacean acid metabolism (CAM) is one of the photosynthetic pathways regarded as adaptations to water stress in land plants. Little is known about correlations among the level of CAM activity, environment of habitat, life form, and phylogenetic relationship of a plant group from an evolutionary perspective. We examined these relationships in 18 species of Cymbidium (Orchidaceae) because the genus shows distinctive diversification of habitats and life forms. The photosynthetic type was classed into three categories, strong CAM, weak CAM, and C3 on the basis of CAM activity. CAM expression in Cymbidium was confined to the epiphytic and lithophytic species. Especially, all of these species from tropical to subtropical rainforest exhibited CAM activity. On the other hand, the terrestrial species always exhibited C3 metabolism irrespective of their varied habitats. Regarding the evolution of photosynthetic characters, weak CAM was the ancestral state in Cymbidium and strong CAM and C3 metabolism occurred subsequently. The evolution of strong CAM likely enabled Cymbidium to extend to exposed sites in tropical lowland where marked water stress exists. Further, different levels of CAM activity characterized each species and such potential plasticity of CAM may realize the radiation of Cymbidium into sites with different environmental conditions.

AB - Crassulacean acid metabolism (CAM) is one of the photosynthetic pathways regarded as adaptations to water stress in land plants. Little is known about correlations among the level of CAM activity, environment of habitat, life form, and phylogenetic relationship of a plant group from an evolutionary perspective. We examined these relationships in 18 species of Cymbidium (Orchidaceae) because the genus shows distinctive diversification of habitats and life forms. The photosynthetic type was classed into three categories, strong CAM, weak CAM, and C3 on the basis of CAM activity. CAM expression in Cymbidium was confined to the epiphytic and lithophytic species. Especially, all of these species from tropical to subtropical rainforest exhibited CAM activity. On the other hand, the terrestrial species always exhibited C3 metabolism irrespective of their varied habitats. Regarding the evolution of photosynthetic characters, weak CAM was the ancestral state in Cymbidium and strong CAM and C3 metabolism occurred subsequently. The evolution of strong CAM likely enabled Cymbidium to extend to exposed sites in tropical lowland where marked water stress exists. Further, different levels of CAM activity characterized each species and such potential plasticity of CAM may realize the radiation of Cymbidium into sites with different environmental conditions.

UR - http://www.scopus.com/inward/record.url?scp=40549096357&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=40549096357&partnerID=8YFLogxK

U2 - 10.1007/s10265-007-0144-6

DO - 10.1007/s10265-007-0144-6

M3 - Article

C2 - 18246297

AN - SCOPUS:40549096357

VL - 121

SP - 163

EP - 177

JO - Journal of Plant Research

JF - Journal of Plant Research

SN - 0918-9440

IS - 2

ER -