Arid
DOI10.1639/0007-2745(2007)110[595:DIBAR]2.0.CO;2
Desiccation-tolerance in bryophytes: a review
Proctor, Michael C. F.1; Oliver, Melvin J.2; Wood, Andrew J.3; Alpert, Peter4; Stark, Lloyd R.5; Cleavitt, Natalie L.6; Mishler, Brent D.7
通讯作者Proctor, Michael C. F.
来源期刊BRYOLOGIST
ISSN0007-2745
EISSN1938-4378
出版年2007
卷号110期号:4页码:595-621
英文摘要

Desiccation-tolerance (DT), the ability to lose virtually all free intracellular water and then recover normal function upon rehydration, is one of the most remarkable features of bryophytes. The physiology of bryophytes differs in major respects from that of vascular plants by virtue of their smaller size; unlike vascular plants, the leafy shoots of bryophytes equilibrate rapidly with the water potential in their surroundings and tend to be either fully hydrated or desiccated and metabolically inactive. The time required to recover from desiccation increases and degree of recovery decreases with length of desiccation; both also depend upon temperature and intensity of desiccation. Tolerance in at least some species shows phenotypic plasticity. Recovery of respiration, photosynthesis and protein synthesis takes place within minutes or an hour or two; recovery of the cell cycle, food transport and the cytoskeleton may take 24 hours or more. Positive carbon balance is essential to survival of repeated cycles of drying and wetting; significant growth requires continuously wet periods of a few days or more. Male and female gametophytes, and gametophyte and sporophyte, may differ in tolerance. Desiccation-tolerance is essential to dispersal and establishment of spores and vegetative propagules. The mechanisms of DT in bryophytes, including expression of LEA proteins, high content of non-reducing sugars and effective antioxidant and photo-protection, are at least partly constitutive, allowing survival of rapid drying, but changes in gene expression resulting from mRNA sequestration and alterations in translational controls elicited upon rehydration are also important to repair processes following re-wetting. Phylogenetic and ecological considerations suggest that DT is a primitive character of land plants, lost in the course of evolution of the homoiohydric vascular-plant shoot system, but retained in spores, pollen and seeds, and re-evolved in the vegetative tissues of vascular "resurrection plants." Bryophytes have retained the poikilohydry and DT that are probably the optimal pattern of adaptation at their scale, but modern bryophytes are specialized and diverse, and are removed by the same span of evolutionary time as the flowering plants from their primitive origins.


英文关键词ABA bryophytes dehydration desiccation-tolerance dispersal establishment evolution gametophyte genomics LEA-like proteins liverworts mosses photoprotection poikilohydry rehydration rehydrins sporophyte temperature
类型Review
语种英语
国家England ; USA
收录类别SCI-E
WOS记录号WOS:000251880200001
WOS关键词MOSS TORTULA-RURALIS ; PLANT CRATEROSTIGMA-PLANTAGINEUM ; DESERT MOSS ; PROTONEMAL MORPHOGENESIS ; ABSCISIC-ACID ; CHLOROPHYLL FLUORESCENCE ; VEGETATIVE DESICCATION ; SYNTRICHIA-CANINERVIS ; ANOMODON-VITICULOSUS ; POLYTRICHUM-FORMOSUM
WOS类目Plant Sciences
WOS研究方向Plant Sciences
来源机构University of California, Berkeley
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/153719
作者单位1.Univ Exeter, Exeter EX4 4QD, Devon, England;
2.Univ Missouri, USDA ARS, MWA, PGRU, Columbia, MO 65211 USA;
3.So Illinois Univ, Dept Biol, Carbondale, IL 62901 USA;
4.Univ Massachusetts, Dept Biol, Amherst, MA 01003 USA;
5.Univ Nevada, Sch Life Sci, Las Vegas, NV 89154 USA;
6.Cornell Univ, Dept Nat Resources, Ithaca, NY 14853 USA;
7.Univ Calif Berkeley, Dept Integrat Biol, Berkeley, CA 94720 USA
推荐引用方式
GB/T 7714
Proctor, Michael C. F.,Oliver, Melvin J.,Wood, Andrew J.,et al. Desiccation-tolerance in bryophytes: a review[J]. University of California, Berkeley,2007,110(4):595-621.
APA Proctor, Michael C. F..,Oliver, Melvin J..,Wood, Andrew J..,Alpert, Peter.,Stark, Lloyd R..,...&Mishler, Brent D..(2007).Desiccation-tolerance in bryophytes: a review.BRYOLOGIST,110(4),595-621.
MLA Proctor, Michael C. F.,et al."Desiccation-tolerance in bryophytes: a review".BRYOLOGIST 110.4(2007):595-621.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Proctor, Michael C. F.]的文章
[Oliver, Melvin J.]的文章
[Wood, Andrew J.]的文章
百度学术
百度学术中相似的文章
[Proctor, Michael C. F.]的文章
[Oliver, Melvin J.]的文章
[Wood, Andrew J.]的文章
必应学术
必应学术中相似的文章
[Proctor, Michael C. F.]的文章
[Oliver, Melvin J.]的文章
[Wood, Andrew J.]的文章
相关权益政策
暂无数据
收藏/分享

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。