2021
DOI: 10.3389/fpls.2021.714305
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Insights Into the Molecular Evolution of AT-Hook Motif Nuclear Localization Genes in Brassica napus

Abstract: AT-hook motif nuclear localization (AHL) proteins belong to a family of transcription factors, and play important roles in plant growth and development and response to various stresses through protein-DNA and protein-protein interactions. To better understand the Brassica napus AHL gene family, AHL genes in B. napus and related species were analyzed. Using Arabidopsis as a reference, 122 AHL gene family members were first identified in B. napus. According to the phylogenetic tree and gene organization, the Bna… Show more

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Cited by 9 publications
(8 citation statements)
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References 124 publications
(186 reference statements)
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“…Clade-A contained 20 JrAHLs, and it was also classified into Type-I, harboring the Clade-A PPC domain and the Type-I AT-hook motifs in their putative protein sequence ( Figure 2 right panel). The higher abundance of Type I members (54%) in walnut is also consistent with observations in other land plants [ 25 , 27 , 31 ]. There were 17 JrAHL members in Clade-B, which all harbored the Clade-B PPC domain.…”
Section: Resultssupporting
confidence: 89%
See 1 more Smart Citation
“…Clade-A contained 20 JrAHLs, and it was also classified into Type-I, harboring the Clade-A PPC domain and the Type-I AT-hook motifs in their putative protein sequence ( Figure 2 right panel). The higher abundance of Type I members (54%) in walnut is also consistent with observations in other land plants [ 25 , 27 , 31 ]. There were 17 JrAHL members in Clade-B, which all harbored the Clade-B PPC domain.…”
Section: Resultssupporting
confidence: 89%
“…In recent years, the AHL gene family has been identified and analyzed in several species, such as Arabidopsis, soybean ( Glycine max ) [ 25 ], cotton ( Gossypium raimondii ) [ 26 ], Brassica napus [ 27 ], grape ( Vitis vinifera ) [ 28 ], carrot ( Daucus carota subsp. sativus ) [ 29 ], and so on.…”
Section: Introductionmentioning
confidence: 99%
“…However, none of the Brassica PHR members contains the aforementioned copies in any of the tetraploids or their progenitors, suggesting PHR genes were lost on a large scale, possibly due to functional redundancy between the replicates after the triploidization. The large-scale loss/genome contraction was also noted for other gene families like AHLs , EXPs, and flowering-time genes in Brassica [ 25 , 29 , 30 ]. In particular, heavy gene losses have occurred for CRY3 and PHYD subfamilies in all the Brassica species.…”
Section: Discussionmentioning
confidence: 82%
“…Like EXP [ 25 ], AHL [ 29 ], and Homeobox (HB) gene families of Brassica, segmental duplication is the driving force in the expansion of the PHR gene families. The most recent segmental duplication occurred in B. napus (for BnUVR8 like 2: BnUVR8 like 2-1, BnUVR8 like 2: BnUVR8 like 2-2) was 3.7 MYA.…”
Section: Discussionmentioning
confidence: 99%
“…One of the major driving forces for gene neo‐functionalization after duplication events is the fixation of adaptive residues (Ohno, 1970; Conant & Wolfe, 2008). There is a vast literature showing the incidence of positive selection in plant TFs (Viola et al ., 2012; Wu et al ., 2014; Bartlett et al ., 2016; Derbyshire et al ., 2021; Zhang et al ., 2021), even including TB1 ‐like genes from the TCP family (Gübitz et al ., 2003; Martín‐Trillo et al ., 2011). However, the implication of adaptive evolution in the binding preference of TFs to chromatin remains largely unknown.…”
Section: Introductionmentioning
confidence: 99%