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Title: Transcriptional networks — crops, clocks, and abiotic stress

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Publication Date:
Sponsoring Org.:
OSTI Identifier:
Grant/Contract Number:
SC0012639; SC0008769
Resource Type:
Journal Article: Publisher's Accepted Manuscript
Journal Name:
Current Opinion in Plant Biology
Additional Journal Information:
Journal Volume: 24; Journal Issue: C; Related Information: CHORUS Timestamp: 2017-05-18 03:30:17; Journal ID: ISSN 1369-5266
Country of Publication:
United Kingdom

Citation Formats

Gehan, Malia A., Greenham, Kathleen, Mockler, Todd C., and McClung, C. Robertson. Transcriptional networks — crops, clocks, and abiotic stress. United Kingdom: N. p., 2015. Web. doi:10.1016/j.pbi.2015.01.004.
Gehan, Malia A., Greenham, Kathleen, Mockler, Todd C., & McClung, C. Robertson. Transcriptional networks — crops, clocks, and abiotic stress. United Kingdom. doi:10.1016/j.pbi.2015.01.004.
Gehan, Malia A., Greenham, Kathleen, Mockler, Todd C., and McClung, C. Robertson. 2015. "Transcriptional networks — crops, clocks, and abiotic stress". United Kingdom. doi:10.1016/j.pbi.2015.01.004.
title = {Transcriptional networks — crops, clocks, and abiotic stress},
author = {Gehan, Malia A. and Greenham, Kathleen and Mockler, Todd C. and McClung, C. Robertson},
abstractNote = {},
doi = {10.1016/j.pbi.2015.01.004},
journal = {Current Opinion in Plant Biology},
number = C,
volume = 24,
place = {United Kingdom},
year = 2015,
month = 4

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1016/j.pbi.2015.01.004

Citation Metrics:
Cited by: 23works
Citation information provided by
Web of Science

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  • The exponential growth in world population is feeding a steadily increasing global need for arable farmland, a resource that is already in high demand. This trend has led to increased farming on subprime arid and semi-arid lands, where limited availability of water and a host of environmental stresses often severely reduce crop productivity. The conventional approach to mitigating the abiotic stresses associated with arid climes is to breed for stress-tolerant cultivars, a time and labor intensive venture that often neglects the complex ecological context of the soil environment in which the crop is grown. In recent years, studies have attemptedmore » to identify microbial symbionts capable of conferring the same stress-tolerance to their plant hosts, and new developments in genomic technologies have greatly facilitated such research. Here in this paper, we highlight many of the advantages of these symbiont-based approaches and argue in favor of the broader recognition of crop species as ecological niches for a diverse community of microorganisms that function in concert with their plant hosts and each other to thrive under fluctuating environmental conditions« less
  • We tested several hypotheses about the relationship of competition to abiotic stress, using the vegetation of the semiarid Piceance Basin of northwestern Colorado. We studied competition among the shrubs Amelanchier utahensis, Artemisia tridentata, and Symphoricarpos oreophilus, and between the trees Pinus edulis and Juniperus osteosperma, in 10 sites. We calculated several indices of abiotic moisture stress, based on the slope, aspect, and elevation of each site. Competition was measured by regressions of the distance separating neighboring plants vs. the sum of their canopy areas. We detected competition among these plants in all but one combination of species and in mostmore » sites. No significant differences in the intensity of competition were found within species combinations. Significant differences in the importance of competition were found in one of three interspecific combinations of shrub species, and in two of three combinations of tree species. Neither the intensity nor the importance of competition showed any consistent relationship with any index of abiotic moisture stress. Thus, no hypothesized relationship between abiotic stress and competition is supported. Our data also show no consistent relationship between the importance of competition and its intensity, supporting our hypothesis that the intensity and the importance of competition are independent.« less
  • Proteins in CPL1 family are unique to plants and contain a phosphatase catalytic domain and double-stranded RNA (dsRNA)-binding motifs (DRMs) in a single peptide. Though DRMs are important for the function of Arabidopsis CPL1 in vivo, the role of CPL1 DRM has been obscure. We have isolated two transcription factors, ANAC019 (At1g52890) and AtMYB3 (At1g22640), which specifically interact with the C-terminal region (640-967) of AtCPL1 containing two DRMs. Detailed interaction analysis indicated that AtMYB3 specifically interacted with the first DRM but not with the second DRM in CPL1 C-terminal fragment. GFP-fusion analysis indicated that AtMYB3 localized in nuclei-like CPL1, andmore » its expression is induced by abiotic stress and ABA treatment. These results suggest that AtMYB3 function in abiotic stress signaling in concert with CPL1.« less
  • Highlights: • We identify DDI1 as a DAMAGED DNA BINDING PROTEIN1 (DDB1)-interacting protein. • DDI1 interacts with the CUL4–DDB1-based ubiquitin ligase in the nucleus. • DDI1 plays a positive role in regulating abiotic stress response in tomato. - Abstract: CULLIN4(CUL4)–DAMAGED DNA BINDING PROTEIN1 (DDB1)-based ubiquitin ligase plays significant roles in multiple physiological processes via ubiquitination-mediated degradation of relevant target proteins. The DDB1–CUL4-associated factor (DCAF) acts as substrate receptor in the CUL4–DDB1 ubiquitin ligase complex and determines substrate specificity. In this study, we identified a tomato (Solanum lycopersicum) DDB1-interacting (DDI1) protein as a DCAF protein involved in response to abiotic stresses,more » including UV radiation, high salinity and osmotic stress. Co-immunoprecipitation and bimolecular fluorescence complementation assay indicated that DDI1 associates with CUL4–DDB1 in the nucleus. Quantitative RT-PCR analysis indicated the DDI1 gene is induced by salt, mannitol and UV-C treatment. Moreover, transgenic tomato plants with overexpression or knockdown of the DDI1 gene exhibited enhanced or attenuated tolerance to salt/mannitol/UV-C, respectively. Thus, our data suggest that DDI1 functions as a substrate receptor of the CUL4–DDB1 ubiquitin ligase, positively regulating abiotic stress response in tomato.« less