Universität zu Köln

Becker, Burkhard ORCID: 0000-0002-7965-1396, Feng, Xuehuan ORCID: 0000-0002-0732-9322, Yin, Yanbin ORCID: 0000-0001-7667-881X and Holzinger, Andreas ORCID: 0000-0002-7745-3978 (2020). Desiccation tolerance in streptophyte algae and the algae to land plant transition: evolution of LEA and MIP protein families within the Viridiplantae. J. Exp. Bot., 71 (11). S. 3270 - 3279. OXFORD: OXFORD UNIV PRESS. ISSN 1460-2431

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Abstract

The present review summarizes the effects of desiccation in streptophyte green algae, as numerous experimental studies have been performed over the past decade particularly in the early branching streptophyte Klebsormidium sp. and the late branching Zygnema circumcarinatum. The latter genus gives its name to the Zygenmatophyceae, the sister group to land plants. For both organisms, transcriptomic investigations of desiccation stress are available, and illustrate a high variability in the stress response depending on the conditions and the strains used. However, overall, the responses of both organisms to desiccation stress are very similar to that of land plants. We highlight the evolution of two highly regulated protein families, the late embryogenesis abundant (LEA) proteins and the major intrinsic protein (MIP) family. Chlorophytes and streptophytes encode LEA4 and LEA5, while LEA2 have so far only been found in streptophyte algae, indicating an evolutionary origin in this group. Within the MIP family, a high transcriptomic regulation of a tonoplast intrinsic protein (TIP) has been found for the first time outside the embryophytes in Z. circumcarinatum. The MIP family became more complex on the way to terrestrialization but simplified afterwards. These observations suggest a key role for water transport proteins in desiccation tolerance of streptophytes.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Becker, Burkhard UNSPECIFIED orcid.org/0000-0002-7965-1396 UNSPECIFIED Feng, Xuehuan UNSPECIFIED orcid.org/0000-0002-0732-9322 UNSPECIFIED Yin, Yanbin UNSPECIFIED orcid.org/0000-0001-7667-881X UNSPECIFIED Holzinger, Andreas UNSPECIFIED orcid.org/0000-0002-7745-3978 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-330086
DOI:	10.1093/jxb/eraa105
Journal or Publication Title:	J. Exp. Bot.
Volume:	71
Number:	11
Page Range:	S. 3270 - 3279
Date:	2020
Publisher:	OXFORD UNIV PRESS
Place of Publication:	OXFORD
ISSN:	1460-2431
Language:	English
Faculty:	Faculty of Mathematics and Natural Sciences
Divisions:	Faculty of Mathematics and Natural Sciences > Department of Biology > Botanical Institute
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language GREEN-ALGAE; OSMOTIC-STRESS; ZYGNEMA; DEHYDRATION; INSIGHTS; ZYGNEMATOPHYCEAE; ALIGNMENT; CONQUEST; ORIGIN; GENES Multiple languages Plant Sciences Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/33008