AtRD22 and AtUSPL1, members of the plant-specific BURP domain family involved in Arabidopsis thaliana drought tolerance

Crop plants are regularly challenged by a range of environmental stresses which typically retard their growth and ultimately compromise economic yield. The stress response involves the reprogramming of approximately 4% of the transcriptome. Here, the behavior of AtRD22 and AtUSPL1, both members of t...

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Published in:PloS one 2014-10, Vol.9 (10), p.e110065
Main Authors: Harshavardhan, Vokkaliga Thammegowda, Van Son, Le, Seiler, Christiane, Junker, Astrid, Weigelt-Fischer, Kathleen, Klukas, Christian, Altmann, Thomas, Sreenivasulu, Nese, Bäumlein, Helmut, Kuhlmann, Markus
Format: Article
Language:English
Subjects:
Abiotic stress
Abscisic acid
Adaptation, Biological - genetics
Agricultural economics
Arabidopsis
Arabidopsis - physiology
Arabidopsis Proteins - chemistry
Arabidopsis Proteins - genetics
Arabidopsis thaliana
Biology and Life Sciences
Chlorophyll
Chlorophyll - metabolism
Corn
Deoxyribonucleic acid
DNA
Drought
Drought resistance
Droughts
Environmental stress
Gene Deletion
Gene expression
Gene Expression Profiling
Gene Expression Regulation, Plant
Gene Order
Genetics
Genomes
Genomics
Humidity
Interdisciplinary aspects
Kinases
Moisture
Moisture stress
Multigene Family
Mutagenesis, Insertional
Mutants
Oryza
Osmotic Pressure
Phenotype
Phenotypes
Pheophytins - metabolism
Plant genetics
Plants, Genetically Modified
Polygalacturonase
Protein Interaction Domains and Motifs
Proteins
Rice
Salinity
Seeds
Soybeans
Stress response
Stress, Physiological - genetics
Stresses
Transcription
Transcription, Genetic
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Summary:Crop plants are regularly challenged by a range of environmental stresses which typically retard their growth and ultimately compromise economic yield. The stress response involves the reprogramming of approximately 4% of the transcriptome. Here, the behavior of AtRD22 and AtUSPL1, both members of the Arabidopsis thaliana BURP (BNM2, USP, RD22 and polygalacturonase isozyme) domain-containing gene family, has been characterized. Both genes are up-regulated as part of the abscisic acid (ABA) mediated moisture stress response. While AtRD22 transcript was largely restricted to the leaf, that of AtUSPL1 was more prevalent in the root. As the loss of function of either gene increased the plant's moisture stress tolerance, the implication was that their products act to suppress the drought stress response. In addition to the known involvement of AtUSPL1 in seed development, a further role in stress tolerance was demonstrated. Based on transcriptomic data and phenotype we concluded that the enhanced moisture stress tolerance of the two loss-of-function mutants is a consequence of an enhanced basal defense response.
ISSN:1932-6203
1932-6203
DOI:10.1371/journal.pone.0110065