The DELLA-ABI4-HY5 module integrates light and gibberellin signals to regulate hypocotyl elongation

Xiong, Haibo; Lu, Daru; Li, Zhiyuan; Wu, Jiang; Ning, Xin; Lin, Weijun; Bai, Zechen; Zheng, Canhui; Sun, Yuanzhang; Chi, Wei; Zhang, Lixin; Xu, Xiumei

doi:10.1016/j.xplc.2023.100597

Cited by 29 publications

(19 citation statements)

References 65 publications

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“…These GRAS members were classified into 17 subfamilies and 5 of 18 30 orthologous groups (OGs) (Figure 1a), according to a previous classification. Among the 17 subfamilies, the PAT1 subfamily contained the largest number of cucurbit GRAS genes, followed by DELLA (27), HAM (26), LISCL (21) subfamilies (Figure 1a,b), etc. Certain orthologous genes, namely those belonging to the SCLA (Scarecrow-Like A) subfamily, RAD1-2 (Required for Arbuscule Development 1-2) subfamily, OG-NSP2-Amb, and OG-NSP2-3 OG (Figure 1b), were not identified in any of the six cucurbit crops.…”

Section: Identification and Phylogenetic Analysis Of Gras Genes In Si...mentioning

confidence: 99%

“…The GRAS gene family can be divided into 8-17 subfamilies [7][8][9]11,12], including DELLA, HAM (Hairy meristem), PAT1 (Phytochrome-A signal transduction 1), DLT (Dwarf and low-tillering), SCR (Scarecrow), and SHR (Short root), etc. GRASs have been reported to regulate multiple biological processes and molecular functions, including Horticulturae 2023, 9, 717 2 of 18 hormone-related [1,2,13,14], abiotic stress responses [15][16][17][18], cell cycle [19,20], grain size [21,22], fruit development and ripening [23][24][25], and hypocotyl elongation [26]. For instance, previous studies have reported the involvement of SlGRAS2 (Solyc07g063940) [23], SlGRAS4 (Solyc01g100200) [25], and SlFSR (Solyc07g052960) [24] in fruit development or ripening in tomato.…”

Section: Introductionmentioning

confidence: 99%

“…Light is a crucial factor in the growth and development of plants. Seedlings grown under dark conditions exhibit longer hypocotyls than those grown under light conditions [26]. Recent studies have reported that cucumber buffers against the high-light stress-induced accumulation of CsGA2ox8 transcripts through alternative splicing, which finely tunes gibberellin levels and maintains hypocotyl elongation [27].…”

Section: Introductionmentioning

confidence: 99%

“…They possess a distinctive N-terminal GA perception region that binds the GA receptor GID 1 (Gibberellin-insensitive dwarf 1) and a C-terminal GRAS domain that interacts with several regulatory proteins, leading to GA repression activity [6,28]. Members of the DELLA protein family play essential roles in regulating various aspects of plant growth and development, including hypocotyl elongation [6,26,28].…”

Section: Introductionmentioning

confidence: 99%

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Comparative Analysis of GRAS Genes in Six Cucurbitaceae Species Provides Insights into Their Evolution and Function

Zhang

Wang

et al. 2023

Horticulturae

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The Cucurbitaceae family comprises economically valuable vegetables such as cucumber, melon, and pumpkin. GRAS proteins, which are crucial transcription factors, play diverse roles in plant growth and development. However, comparative investigations of GRAS proteins across Cucurbitaceae species are limited. Here, we identified 241 GRAS family genes in six cucurbit crops. The number of GRAS genes in cucumber, melon, wax gourd, watermelon, and bottle gourd ranged from 36 to 37, while the pumpkin genome contained 57 GRAS genes, possibly due to a recent whole-genome duplication. We classified cucurbit GRAS genes into 16 subfamilies and identified species-specific motifs and specific-expression patterns in the SCLB and RAD1 subfamilies. Notably, we identified 38 tissue-specific expressed genes, particularly fruit-specific genes potentially involved in fruit development. Additionally, we predicted the role of GRAS genes in regulating hypocotyl elongation under weak or dark light conditions in cucurbit plants. These findings enhance our understanding of the characteristics, evolution, and potential functions of GRAS genes in six cucurbit crops, providing valuable resources for genetic research in the Cucurbitaceae family as well as important agronomic traits.

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Section: Identification and Phylogenetic Analysis Of Gras Genes In Si...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Comparative Analysis of GRAS Genes in Six Cucurbitaceae Species Provides Insights into Their Evolution and Function

Zhang

Wang

et al. 2023

Horticulturae

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“…PIF-governed modulation of the gene expression of gibberellins (GAs) and the auxin-related signaling pathway is the major driver for shade avoidance [33]. More evidence showed that GAs and auxin are required to regulate hypocotyl elongation in shade avoidance [34,35]. DELLA proteins are GA-signaling repressors that can block plant growth and development [36][37][38], and light can promote DELLA protein accumulation by reducing GA levels [39].…”

Section: Introductionmentioning

confidence: 99%

Clonal Transgenerational Effects of Parental Grazing Environment on Offspring Shade Avoidance

Yin,

Ren,

Fry

et al. 2024

Agronomy

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Grassland plants that endure livestock grazing exhibit a dwarf phenotype, which can be transmitted to clonal offspring. Yet to date, it remains poorly understood whether such transgenerational dwarf effects alter the plants’ response to shade. Here, we conducted a common garden experiment under sunlight and shade conditions with clonal Leymus chinensis offspring, the parents of which had endured livestock overgrazing (OG) and non-grazing (NG) in the field, respectively. Plant morphological, physiological, and transcriptomic analyses were carried out. The results indicated that NG offspring showed greater shade avoidance than OG offspring. That is, NG offspring exhibited greater plasticity of vegetative height and leaf width, which may be contributed to their greater photosynthetic capacity and gibberellin (GA3) content compared with OG offspring when treated with shade. In addition, RNA-Seq profiling showed that differentially expressed genes in NG offspring were mainly enriched in RNA modification and metabolic processes, which facilitated rapid response to shade. Phytochrome interacting factors (PIFs) promoted downstream shade marker genes in NG offspring by significantly downregulating the expression of PHYC, SPY, and DELLA. Our findings suggest that light conditions should be taken into account to better understand transgenerational dwarf effects induced by livestock grazing on grassland ecosystems. These results provide new insights into the inducible factors of phenotypic variations in grassland plants that experience grazing.

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Exogenous Chitosan Nanoparticles Modulated Drought Stress Through Changing Yield, Biochemical Attributes, and Fatty Acid Profile of Common Bean (Phaseolus Vulgaris L.) Cultivars

Dolatkhah Dashtmian,

Hosseini Mazinani,

Pazoki

2023

Gesunde Pflanzen

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The DELLA-ABI4-HY5 module integrates light and gibberellin signals to regulate hypocotyl elongation

Cited by 29 publications

References 65 publications

Comparative Analysis of GRAS Genes in Six Cucurbitaceae Species Provides Insights into Their Evolution and Function

Comparative Analysis of GRAS Genes in Six Cucurbitaceae Species Provides Insights into Their Evolution and Function

Clonal Transgenerational Effects of Parental Grazing Environment on Offspring Shade Avoidance

Exogenous Chitosan Nanoparticles Modulated Drought Stress Through Changing Yield, Biochemical Attributes, and Fatty Acid Profile of Common Bean (Phaseolus Vulgaris L.) Cultivars

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