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BaMV-induced Changes in Transcriptome and Proteome in Leaf tissues of Dendrocalamus latiflorus

ABSTRACT: The economically important bamboo species Dendrocalamus latiflorus Munro (D. latiflorus) exhibits highly susceptible to Bamboo mosaic virus (BaMV), resulting in severe growth and development impairment. However, the proteomic profiles, transcript processing dynamics, and their coordinated post-transcriptional regulation during bamboo-virus interactions remain uncharacterized. Tandem mass tag (TMT)-based quantitative proteomic revealed suppression of photosynthesis-related proteins and upregulation of protein synthesis and degradation, antioxidant within D. latiflorus during BaMV infection. Moreover, the APR1 protein serviced as a regulatory hub for connecting sulfur metabolism, antioxidant, and photosynthesis. Integration of nanopore direct RNA sequencing (DRS) data revealed reduced D. latiflorus full-length read ratios, consequently attenuating transcriptome and proteome correlation. BaMV infected bamboos presented preferential usage of distal poly(A) site and lengthened poly(A) tail lengths (PALs) of pathogenesis-related (PR) genes. Epitranscriptome analysis showed increased N6-methyladenosine (m6A) ratios in POR (chlorophyll synthesis) and NCED1 (abscisic acid synthesis), which coupled with reduced transcriptional levels. In total, 122 potential m6A modification sites were found in BaMV, with AAACA representing the predominant consensus motif. Collectively, these results offer insights into post-transcriptional regulation networks during bamboo-BaMV interactions.

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ORGANISM(S): Dendrocalamus Latiflorus

TISSUE(S): Plant Cell, Leaf

SUBMITTER: Xiangrong Li

LAB HEAD: Gu Lianfeng

PROVIDER: PXD061707 | Pride | 2025-11-18

REPOSITORIES: Pride

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Project description:Purpose: The goals of this study was to provide genome-wide data to investigate the molecular mechanism of ABA regulation in many ripening related biological processes, including fruit color variation, antioxidant capacity, flavonoids biosynthesis and photosynthesis. Methods:By applying the next generation sequencing technology, we conducted a comparative analysis of exogenous ABA and NDGA effects on tomato fruit maturation. Results:The high throughput sequencing results showed that 25728 genes expressed across all three samples, and 10388 of them were identified as significantly differently expressed genes (DEGs). Exogenous ABA was found to enhance the transcription of genes in pigments metabolism, including carotenoids biosynthesis and chlorophyll degradation, whereas NDGA treatment inhibited these progresses. The results also revealed the crucial role of ABA in flavonoids synthesis and regulation of antioxidant system. Intriguingly, we also found that an inhibition of endogenous ABA significantly enhanced the transcriptional abundance of genes involved in fruit photosynthesis. Conclusions:next-generation sequencing enabled us to characterize the transcriptomes of tomato fruit treated with ABA and NDGA. By comparing these transcriptomes with control respectively, we observed that ABA could accelerate fruit maturation by positively regulating many genes related to ripening processes. Our study have turned spotlight on the pathways of fruit pigmentation, including carotenoid biosynthesis and chlorophyll metabolism. Exogenous ABA was able to up-regulate many genes in relation to the carotenoids accumulation and chlorophyll breakdown, thus promoting the color transition of tomato fruit. In addition, ABA has the potential to improve the genes related to antioxidant capacity, such as SODs, CATs, APXs, GSTs, GPXs, TrXs and PrxRs. Besides, the expression changes of genes involved in flavonoids biosynthesis after ABA exposure was striking, suggesting ABA could enhance the defense response by producing more secondary metabolite in tomato fruit. Moreover, the sequencing results also implied high level of ABA could negatively affect photosynthesis of tomato fruit, which needs more investigations to explore the interaction between ABA and photosynthesis in the future.

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BaMV-induced Changes in Transcriptome and Proteome in Leaf tissues of Dendrocalamus latiflorus

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