Arid
DOI10.1093/botlinnean/box031
Macroclimatic niche limits and the evolution of C-4 photosynthesis in Gomphrenoideae (Amaranthaceae)
Julia Bena, Maria; Manuel Acosta, Juan; Aagesen, Lone
通讯作者Julia Bena, Maria
来源期刊BOTANICAL JOURNAL OF THE LINNEAN SOCIETY
ISSN0024-4074
EISSN1095-8339
出版年2017
卷号184期号:3页码:283-297
英文摘要

During the evolution of vascular plants, C-4 photosynthesis has developed > 60 times, but most studies concerning the evolution and the ecophysiological advantages of the C-4 syndrome have been carried out in grasses. Among eudicots, C-4 photosynthesis has developed in lineages that are morphologically more diverse than the relatively homogeneous grasses, and conclusions about C-4 evolution based on grasses may or may not apply to eudicots. Little is known about the origin of C-4 photosynthesis in Amaranthaceae s.s., one of the most C-4 species-rich lineages of eudicots. Among subfamily Gomphrenoideae, C-3 and C-4 species are found in arid regions, but high Andean species display the C-4 pathway. In this study, we aimed to compare the climatic extremes between C-3 and C-4 species in Gomphrenoideae. In particular, we evaluated the upper and lower extremes of three climatic variables among closely related C-3 and C-4 lineages, using phylogenetic generalized least squares (PGLS), applied on four topologies: maximum parsimony, Bayesian and maximum likelihood (ML) topologies including species with available DNA sequences and a ML topology that included unsequenced species with available climate data. We tested whether the evolution of C-4 photosynthesis correlates with a niche specialization where both the upper and the lower extremes change position or a niche expansion where only a single extreme changes position. PGLS results showed that C-4 species of Gomphrenoideae have specialized to dryer regions and expanded into colder ones than their C-3 relatives. However, the niche expansion into colder climates only includes areas with low temperatures during winter, not during the growing period. Finally, we found no evidence for a niche change into warmer climates. Therefore, the model for the evolution of C-4 photosynthesis in Gomphrenoideae may differ from the one supported in Chenopodioideae and seems to be more similar to that found in grasses, where the C-4 pathway appears to have evolved in humid habitats, but facilitated an expansion into arid ones. However, we found no support for the common expectation that C-4 species reach warmer climates than their C-3 relatives, contrasting with previous results on grasses.


英文关键词C-4 photosynthesis climatic extremes eudicots Gomphrenoideae macroclimatic niche evolution macroecology
类型Article
语种英语
国家Argentina
收录类别SCI-E
WOS记录号WOS:000404608900001
WOS关键词SEQUENCE DATA ; PHYLOGENETICS ; CLIMATE ; PLANTS ; MODEL ; CHENOPODIACEAE ; TEMPERATURE ; DIVERSITY ; PARSIMONY ; SELECTION
WOS类目Plant Sciences
WOS研究方向Plant Sciences
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/197937
作者单位Inst Bot Darwin CONICET ANCEFN, Labarden 200,Casilla Correo 22,B1642HYD, Buenos Aires, DF, Argentina
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Julia Bena, Maria,Manuel Acosta, Juan,Aagesen, Lone. Macroclimatic niche limits and the evolution of C-4 photosynthesis in Gomphrenoideae (Amaranthaceae)[J],2017,184(3):283-297.
APA Julia Bena, Maria,Manuel Acosta, Juan,&Aagesen, Lone.(2017).Macroclimatic niche limits and the evolution of C-4 photosynthesis in Gomphrenoideae (Amaranthaceae).BOTANICAL JOURNAL OF THE LINNEAN SOCIETY,184(3),283-297.
MLA Julia Bena, Maria,et al."Macroclimatic niche limits and the evolution of C-4 photosynthesis in Gomphrenoideae (Amaranthaceae)".BOTANICAL JOURNAL OF THE LINNEAN SOCIETY 184.3(2017):283-297.
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