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Drought-tolerance of wheat improved by rhizosphere bacteria from harsh environments

enhanced biomass production and reduced emissions of stress volatiles

Timmusk, Salme and Abd El-Daim, Islam Ahmed Moustafa and Copolovici, Lucian and Tanilas, Triin and Kännaste, Astrid and Behers, Lawrence and Nevo, Eviatar and Seisenbaeva, Gulaim and Stenström, Elna and Niinemets, Ülo (2014). Drought-tolerance of wheat improved by rhizosphere bacteria from harsh environments. PloS one. 9:5, 1-13
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Official URL: http://dx.doi.org/10.1371/journal.pone.0096086

Abstract

Water is the key resource limiting world agricultural production. Although an impressive number of research reports have been published on plant drought tolerance enhancement via genetic modifications during the last few years, progress has been slower than expected. We suggest a feasible alternative strategy by application of rhizospheric bacteria coevolved with plant roots in harsh environments over millions of years, and harboring adaptive traits improving plant fitness under biotic and abiotic stresses. We show the effect of bacterial priming on wheat drought stress tolerance enhancement, resulting in up to 78% greater plant biomass and five-fold higher survivorship under severe drought. We monitored emissions of seven stress-related volatiles from bacterially-primed drought-stressed wheat seedlings, and demonstrated that three of these volatiles are likely promising candidates for a rapid non-invasive technique to assess crop drought stress and its mitigation in early phases of stress development. We conclude that gauging stress by elicited volatiles provides an effectual platform for rapid screening of potent bacterial strains and that priming with isolates of rhizospheric bacteria from harsh environments is a promising, novel way to improve plant water use efficiency. These new advancements importantly contribute towards solving food security issues in changing climates.

Authors/Creators:Timmusk, Salme and Abd El-Daim, Islam Ahmed Moustafa and Copolovici, Lucian and Tanilas, Triin and Kännaste, Astrid and Behers, Lawrence and Nevo, Eviatar and Seisenbaeva, Gulaim and Stenström, Elna and Niinemets, Ülo
Title:Drought-tolerance of wheat improved by rhizosphere bacteria from harsh environments
Subtitle:enhanced biomass production and reduced emissions of stress volatiles
Series/Journal:PloS one (1932-6203)
Year of publishing :2014
Volume:9
Number:5
Page range:1-13
Number of Pages:13
Publisher:Public Library of Science
ISSN:1932-6203
Language:English
Publication Type:Journal article
Refereed:Yes
Article category:Scientific peer reviewed
Version:Published version
Full Text Status:Public
Agris subject categories.:F Plant production > F30 Plant genetics and breeding
H Protection of plants and stored products > H01 Protection of plants - General aspects
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Microbiology (Microbiology in the medical area to be 30109)
(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Botany
(A) Swedish standard research categories 2011 > 1 Natural sciences > 104 Chemical Sciences > Inorganic Chemistry
(A) Swedish standard research categories 2011 > 1 Natural sciences > 104 Chemical Sciences > Physical Chemistry
(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Soil Science
Agrovoc terms:wheat, drought resistance, bacteria, soil improvement
Keywords:wheat, drought resistance, bacteria, soil improvement
URN:NBN:urn:nbn:se:slu:epsilon-e-2662
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-e-2662
Additional ID:
Type of IDID
Web of Science (WoS)000338213300019
ID Code:12188
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
S - Faculty of Forest Sciences
Department:(NL, NJ) > Department of Chemistry and Biotechnology (140101-161231)
(NL, NJ) > Dept. of Forest Mycology and Plant Pathology
(S) > Dept. of Forest Mycology and Plant Pathology
Deposited By: SLUpub Connector
Deposited On:15 May 2015 10:21
Metadata Last Modified:04 Aug 2015 15:25

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