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Jorge Dubcovsky
University of California, Davis
GeneGeneticsBotanyLocus (genetics)Biology
301Publications
81H-index
22.1kCitations
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Publications 294
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#1Yazhou Zhang (UC Davis: University of California, Davis)
#2André Schönhofen (UC Davis: University of California, Davis)H-Index: 2
Last. Jorge Dubcovsky (UC Davis: University of California, Davis)H-Index: 81
view all 8 authors...
Abstract Durum wheat is an important food crop used primarily for pasta production. High-molecular-weight glutenin subunits (HMW-GS) encoded by the closely linked genes Glu-B1x and Glu-B1y are known for their combined effects on pasta quality, but their individual contributions and interactions remain poorly understood. In this study, we show that individual loss-of-function mutants of Glu-B1x (ΔBx6) and Glu-B1y (ΔBy8) were associated with significant reductions in gluten strength compared to th...
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#1Lindsay M. Shaw (UC Davis: University of California, Davis)H-Index: 6
#1Lindsay M. Shaw (University of California, Berkeley)
Last. Jorge Dubcovsky (HHMI: Howard Hughes Medical Institute)H-Index: 81
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In Arabidopsis, CONSTANS (CO) integrates light and circadian clock signals to promote flowering under long days (LD). In the grasses, a duplication generated two paralogs designated as CONSTANS 1 (CO1) and CONSTANS 2 (CO2). Here we show that in tetraploid wheat plants grown under LD, combined loss-of-function mutations in the A and B-genome homeologs of CO1 and CO2 (co1 co2) result in a small (3 d) but significant (P 60 d relative to co1 under LD. We detected significant genetic interactions amo...
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#1Nestor Kippes (UC Davis: University of California, Davis)H-Index: 7
#2Carl VanGessel (CSU: Colorado State University)H-Index: 1
Last. Stephen Pearce (CSU: Colorado State University)H-Index: 16
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Background: Photoperiod signals provide important cues by which plants regulate their growth and development in response to predictable seasonal changes. Phytochromes, a family of red and far-red light receptors, play critical roles in regulating flowering time in response to changing photoperiods. A previous study showed that loss-of-function mutations in either PHYB or PHYC result in large delays in heading time and in the differential regulation of a large number of genes in wheat plants grow...
1 CitationsSource
#1Stephen Bolus (UC Davis: University of California, Davis)H-Index: 2
#2Eduard Akhunov (KSU: Kansas State University)H-Index: 41
Last. Jorge Dubcovsky (UC Davis: University of California, Davis)H-Index: 81
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Author(s): Bolus, Stephen; Akhunov, Eduard; Coaker, Gitta; Dubcovsky, Jorge | Abstract: Nucleotide-binding leucine-rich repeat receptors (NLRs) are the most abundant type of immune receptors in plants and can trigger a rapid cell death (hypersensitive) response upon sensing pathogens. We previously cloned the wheat NLR Sr35, which encodes a coiled-coil (CC) NLR that confers resistance to the virulent wheat stem rust race Ug99. Here, we investigated Sr35 signaling after Agrobacterium-mediated tra...
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#1Valentyna Klymiuk (U of S: University of Saskatchewan)H-Index: 1
#1Valentyna Klymiuk (U of S: University of Saskatchewan)
Last. Tzion Fahima (University of Haifa)H-Index: 52
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The wild emmer wheat (Triticum turgidum ssp. dicoccoides; WEW) yellow (stripe) rust resistance genes Yr15, YrG303 and YrH52 were discovered in natural populations from different geographic locations. They all localize to chromosome 1B but were thought to be non-allelic based on differences in resistance response. We recently cloned Yr15 as a Wheat Tandem Kinase 1 (WTK1) and showed here that these three resistance loci co-segregate in fine-mapping populations and share identical full-length genom...
2 CitationsSource
#1Juan Manuel Debernardi (UC Davis: University of California, Davis)H-Index: 3
#1Juan M. Debernardi (UC Davis: University of California, Davis)H-Index: 11
Last. Jorge Dubcovsky (UC Davis: University of California, Davis)H-Index: 81
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#1Shisheng Chen (PKU: Peking University)H-Index: 5
#2Matthew N. Rouse (UMN: University of Minnesota)H-Index: 28
Last. Jorge Dubcovsky (UC Davis: University of California, Davis)H-Index: 81
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Author(s): Chen, Shisheng; Rouse, Matthew N; Zhang, Wenjun; Zhang, Xiaoqin; Guo, Yan; Briggs, Jordan; Dubcovsky, Jorge | Abstract: •Wheat stem rust, caused by Puccinia graminis Pers. f. sp. tritici (Pgt), is a devastating fungal disease threatening global wheat production. Here, we report the identification of stem rust resistance gene Sr60, a race-specific gene from diploid wheat Triticum monococcum L. that encodes a protein with two putative kinase domains. This gene, designated WHEAT TANDEM K...
2 CitationsSource
#1Shuai Wang (Fudan University)
#2Qiu-Ping Li (Fudan University)
Last. Jin-Ying Gou (Fudan University)H-Index: 13
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Abstract Wheat stripe rust, due to infection by Puccinia striiformis f. sp. tritici (Pst), is a devastating disease that is causing significant global grain yield losses. Yr36, which encodes the Wheat Kinase START1 (WKS1), is an effective high-temperature adult-plant resistance gene and confers resistance to a broad spectrum of Pst races. We previously showed that WKS1 phosphorylates the thylakoid ascorbate peroxidase (tAPX) protein and reduces its ability to detoxify peroxides, which may contri...
1 CitationsSource
#1Tyson Howell (UC Davis: University of California, Davis)H-Index: 5
#2Jorge I. Moriconi (CONICET: National Scientific and Technical Research Council)H-Index: 5
Last. Jorge Dubcovsky (UC Davis: University of California, Davis)H-Index: 81
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Author(s): Howell, Tyson; Moriconi, Jorge I; Zhao, Xueqiang; Hegarty, Joshua; Fahima, Tzion; Santa-Maria, Guillermo E; Dubcovsky, Jorge | Abstract: The introgression of a small segment of wheat (Triticumaestivum L.) chromosome arm 1BS in the distal region of rye (Secalecereale L.) 1RS.1BL arm translocation in wheat (henceforth 1RSRW) was previously associated with reduced grain yield, carbon isotope discrimination and stomatal conductance, suggesting reduced access to soil moisture. Here we show...
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#1Chengxia Li (HHMI: Howard Hughes Medical Institute)H-Index: 9
#2Huiqiong Lin (HHMI: Howard Hughes Medical Institute)H-Index: 5
Last. Jorge Dubcovsky (HHMI: Howard Hughes Medical Institute)H-Index: 81
view all 6 authors...
The spikelet is the basic unit of the grass inflorescence. In this study, we show that wheat MADS-box genes VRN1, FUL2 and FUL3 play critical and redundant roles in spikelet and spike development, and also affect flowering time and plant height. In the vrn1ful2ful3-null triple mutant, the inflorescence meristem formed a normal double-ridge structure, but then the lateral meristems generated vegetative tillers subtended by leaves instead of spikelets. These results suggest an essential role of th...
2 CitationsSource
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