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    Tytuł:
    Global transcriptome analysis reveals genes associated with seedling advance growth traits in a selfed family of Chinese fir (Cunninghamia lanceolata)
    Autorzy:
    Deng, H.
    Hu, D.
    Wei, R.
    Yan, S.
    Wang, R.
    Zheng, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/2130183.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    Chinese fir
    selfing
    RNA-Seq
    growth trait
    hub gene
    Opis:
    Chinese fir (Cunninghamia lanceolata (Lamb.) Hook.) is a major timber conifer species in southern China. In this study, we aimed to capture the rarely advanced phenomenon for selfing in this species and illustrated the underlying molecular mechanism, especially the hub gene-regulated networks and pathways, by global transcriptome analysis assays (RNA-Seq). Self-pollination trials revealed a wide variation of selfing effects among parents. Parent cx569 produced a selfed family with the best growth performance at the seedling stage. The growth-based extremely advanced (AD) (n=3) and depressed (DE) variants (n=3; different types) were then subjected to comparative RNA-Seq. The transcriptome data revealed more than 5000 differentially expressed genes (DEGs) for each comparison group (AD versus DE). Weighted gene co-expression network analysis (WGCNA) further identified more than 80 important DEGs that were significantly associated with growth traits in each comparison group. A subsequent enrichment analysis showed that the identified DEGs belonged to six main types, including xylem metabolism-related, sugar and energy metabolism-related, plant hormone signal transduction-related, stress response-related, cytochrome-related, and transcription factor genes. Ten hub genes represented by the ERF071, MYB-relate 305, WRKY6, WRKY31, PER3, LAC4, CESA8, CESA9, GID1, and PR1 genes were co-identified between AD and DE variants. These genes exhibited rather different expression patterns between AD and DE variants, especially of the transcription factor ERF071 gene that presented a low transcript level in the AD seedlings with only 4.45% activity compared to DE's. While, the plant hormone signal transduction GID1 gene was significantly upregulated in AD by about 20-fold when compared to DE's, and fold change of the lignin biosynthesis-related PER3, CESA9 and LAC4 gene expression parallel reached to 10–15 times in an upregulation pattern in AD seedlings. The set of hub gene-linked interaction networks and pathways revealed in this study may be responsible for the rarely advanced phenomenon for selfing at the seedling stage in Chinese fir.
    Źródło:
    Dendrobiology; 2022, 87; 27-46
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Biomass partition and carbon storage of Cunninghamia lanceolata chronosequence plantations in Dabie Mountains in East China
    Autorzy:
    Xie, X.
    Cui, J.
    Shi, W.
    Liu, X.
    Tao, X.
    Wang, Q.
    Xu, X.N.
    Powiązania:
    https://bibliotekanauki.pl/articles/41359.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    biomass
    carbon storage
    Cunninghamia lanceolata
    Chinese fir
    chronosequence
    plantation forest
    Dabie Mountains
    China
    Opis:
    The quantification of biomass carbon pools is important for understanding carbon cycling in forest ecosystems. This study was designed to reveal the effects of stand age on biomass partitioning and carbon storage of Chinese fir plantation stands in Dabie Mountains of Anhui, East China. A total of six even-aged Chinese fir plantation stands along an age-sequence from 10 to 50 years were selected. To quantify the biomass of different tree components, 18 trees with diameter at breast height (D1.3) from 6.5 to 35.2 cm were harvested from the different aged stands. Biomasses of understory vegetation, forest floor and standing dead trees were also investigated. Total biomass carbon storages ranged from 57.6 to 211.4 Mg ha–1 in the different aged stands. Tree layer comprised from 93.7% to 96.4% of the total biomass C pools in the different aged stands. The C pools of the necromass were from 1.8 to 6.2 Mg ha–1. Stand age had a significant effect on tree biomass partitioning, with an increase in proportion of root biomass. The root/shoot ratios were from 0.187 to 0.312, which was significantly positively correlated to stand age. The existing plantation stands are still developing and have somewhat high rate of biomass and carbon accumulations beyond the normal rotation period (usually 25–30 years) even over an age of 50 years. Appropriate prolongation of the rotation period of Chinese fir plantation will be effective in maintaining long-term productivity and providing large carbon sink. The measurements provide valuable data for modelling productivity of Chinese fir plantation forest.
    Źródło:
    Dendrobiology; 2016, 76
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Detection of SNPs based on DNA specific-locus amplified fragment sequencing in Chinese fir (Cunninghamia lanceolata (Lamb.) Hook)
    Autorzy:
    Su, Y.
    Hu, D.
    Zheng, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/41243.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    detection
    single nucleotide polymorphism
    DNA specific-locus amplified fragment sequencing
    fir
    Chinese fir
    Cunninghamia lanceolata
    genotyping
    Opis:
    Compared to angiosperms, conifers represent more complex genomes with larger giga-genome size. To detect large-scale single nucleotide polymorphisms (SNPs), whole genome sequencing of a conifer population is still unaffordable. In this work, we report the use of DNA specific-locus amplified fragment sequencing (SLAF-seq) for large-scale SNP detection in Chinese fir (Cunninghamia lanceolata (Lamb.) Hook), an ecological and economic important conifer in China. SLAF libraries of 18 parent clones of a Chinese fir 2.5 generation seed orchard were sequenced and a total of 117,924 SLAFs were developed. We detected 147,376 SNPs from these SLAFs; 146,231 of them represented simple nucleotide change in A/G, C/T, A/C, A/T, C/G or G/T. The most frequent SNPs occurred in C/T (34.3%), while the majority of SNPs (68.2%) belonged to transition events (A/G and C/T). Notably, all the sequenced samples had high portion (78.2–80.9%) of common SNPs indicating that the Chinese fir genomes tended to change its nucleotides at common loci. 48,406 informative SNPs were then successfully utilized to genotype the tested samples (n = 18) followed by a phylogenetic tree to clarify their genetic relationship. Furthermore, a set of very high linkage disequilibrium (0.51–1.00) were identified from these informative SNPs. In brief, our work demonstrated that SLAF-seq is an alternative and cost-effectively high-throughput approach for large-scale SNP exploitation in Chinese fir. While the obtained SNPs offer useful marker resource for further genetic and genomic studies and will be helpful for Chinese fir breeding programs.
    Źródło:
    Dendrobiology; 2016, 76
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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