Arid
DOI10.1139/cjb-2016-0263
Syntrichia norvegica shoots exhibit a complex inducible response to desiccation: separating the effects of rate of drying and water content
Stark, Lloyd R.1; Greenwood, Joshua L.1; Slate, Mandy L.2; Brinda, John C.3
通讯作者Stark, Lloyd R.
来源期刊BOTANY
ISSN1916-2790
EISSN1916-2804
出版年2017
卷号95期号:5页码:481-491
英文摘要

Plants in the moss genus Syntrichia are considered to have constitutive desiccation tolerance (DT), as in, able to tolerate a rapid drying event without incurring significant damage upon rehydration. However, few researchers have considered the separate effects of rate of drying and water content, and incorporated fully dehardened (to DT) plants in the experiments. Plants of Syntrichia norvegica F. Weber were cultured under conditions of suprasaturation, and adult shoots were exposed to a range of drying rates and equilibrating relative humidities (RHs), rehydrated, and assessed for chlorophyll fluorescence and regeneration potential. Adult shoots exhibited severe damage across all drying rates when equilibrated at RHs <30%. However, an inducible response to desiccation was present across all water contents as the rate of drying was extended from 0 to 4 d. The least desiccation damage occurred at longer drying times and higher water contents (8 d at 75% RH). A constitutive phenotype for DT was not strictly evident in S. norvegica. Rather, we observed an incomplete pattern of environmentally inducible DT, coupled with heavy shoot damage at lower water contents. Rate of drying and equilibrating RH clearly interact in producing the pattern and strategy of DT for this species.


英文关键词constitutive ectohydry chlorophyll fluorescence regeneration suprasaturation mosses
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000400978300004
WOS关键词MOSS ATRICHUM-ANDROGYNUM ; TORTULA-RURALIS ; CHLOROPHYLL FLUORESCENCE ; DESERT MOSS ; TOLERANT MOSS ; ECOLOGICAL STRATEGY ; GRIMMIA-PULVINATA ; REHYDRATION ; BRYOPHYTES ; RECOVERY
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/2XILL650/197949
作者单位1.Univ Nevada, Sch Life Sci, 4505 Maryland Pkwy, Las Vegas, NV 89154 USA;
2.Univ Montana, Div Biol Sci, Missoula, MT 59812 USA;
3.Missouri Bot Garden, POB 299, St Louis, MO 63166 USA
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GB/T 7714
Stark, Lloyd R.,Greenwood, Joshua L.,Slate, Mandy L.,et al. Syntrichia norvegica shoots exhibit a complex inducible response to desiccation: separating the effects of rate of drying and water content[J],2017,95(5):481-491.
APA Stark, Lloyd R.,Greenwood, Joshua L.,Slate, Mandy L.,&Brinda, John C..(2017).Syntrichia norvegica shoots exhibit a complex inducible response to desiccation: separating the effects of rate of drying and water content.BOTANY,95(5),481-491.
MLA Stark, Lloyd R.,et al."Syntrichia norvegica shoots exhibit a complex inducible response to desiccation: separating the effects of rate of drying and water content".BOTANY 95.5(2017):481-491.
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