Arid
DOI10.1016/j.jaridenv.2015.04.011
Photoprotective response to chilling differs among high and low latitude Larrea divaricata grown in a common garden
Medeiros, Juliana S.1; Begaye, Ashlee2; Hanson, David T.3; Logan, Barry4; Pockman, William T.3
通讯作者Medeiros, Juliana S.
来源期刊JOURNAL OF ARID ENVIRONMENTS
ISSN0140-1963
EISSN1095-922X
出版年2015
卷号120页码:51-54
英文摘要

Cold temperatures can cause imbalances between light absorption and photosynthetic light utilization, with potential negative consequences for leaf function. Consequently, in response to chilling evergreens typically exhibit increased total pools of photoprotective xanthophyll cycle pigments and greater nocturnal retention of energy dissipating forms. This may preclude opportunistic responses to transient warmer temperatures, however, and become less beneficial as cold spells become rare and/or short-lived, for example, at the low latitude edges of warm deserts. Thus, we hypothesized intrinsic differences in the photoprotective response to chilling between low and high latitude populations of the widespread warm desert evergreen shrub Larrea divaricata. We determined leaf pigment compositions for high and low latitude plants grown in a common garden before and after 7 days of chilling (12/1 degrees C day/night). High and low latitude plants differed in pigment composition before chilling, and plants from both populations adjusted pigment compositions in response to chilling. Chilling, however, induced significantly greater nocturnal retention of xanthophyll cycle pigments as zeaxanthin and antheraxanthin in high latitude plants compared to those from low latitude. These data provide strong evidence for intrinsic differences between high and low latitude populations in their photoprotective responses to both the greenhouse growth environment and to chilling. (C) 2015 Elsevier Ltd. All rights reserved.


英文关键词Monte Desert Warm desert evergreens Xanthophyll cycle pigments
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000356737400007
WOS关键词ENERGY-DISSIPATION ; XANTHOPHYLL CYCLE ; SEASONAL-CHANGES ; LUTEIN ; PHOTOSYNTHESIS ; ZEAXANTHIN ; RESOLUTION ; CLIMATE
WOS类目Ecology ; Environmental Sciences
WOS研究方向Environmental Sciences & Ecology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/188342
作者单位1.Holden Arboretum, Kirtland, OH 44094 USA;
2.San Juan Coll, Farmington, NM 87402 USA;
3.Univ New Mexico, Albuquerque, NM 87131 USA;
4.Bowdoin Coll, Brunswick, ME 04011 USA
推荐引用方式
GB/T 7714
Medeiros, Juliana S.,Begaye, Ashlee,Hanson, David T.,et al. Photoprotective response to chilling differs among high and low latitude Larrea divaricata grown in a common garden[J],2015,120:51-54.
APA Medeiros, Juliana S.,Begaye, Ashlee,Hanson, David T.,Logan, Barry,&Pockman, William T..(2015).Photoprotective response to chilling differs among high and low latitude Larrea divaricata grown in a common garden.JOURNAL OF ARID ENVIRONMENTS,120,51-54.
MLA Medeiros, Juliana S.,et al."Photoprotective response to chilling differs among high and low latitude Larrea divaricata grown in a common garden".JOURNAL OF ARID ENVIRONMENTS 120(2015):51-54.
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