Leaf Size Development Differences and Comparative Transcriptome Analyses of Two Poplar Genotypes

Zhang, Lei; Du, Jiujun; Ge, Xiaolan; Cao, Demei; Hu, Jianjun

doi:10.3390/genes12111775

Cited by 19 publications

(9 citation statements)

References 50 publications

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“…The intricate regulation of cell expansion involves plant hormones, growth-regulating factors (GRFs), and other regulatory elements (Zhang et al 2021). GRF1 , a key player in leaf cell expansion, is evident from the contrasting sizes of leaves in the overexpression and mutant lines compared to wild types (Kim et al 2003).…”

Section: Discussionmentioning

confidence: 99%

Exploration of the intricacies of low light-induced changes in cigar tobacco leaf anticlinal growth: A holistic approach from anatomical and hormonal levels to gene expression

Ma,

Yang,

Ren

et al. 2023

Preprint

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Cigar tobacco stands as a pivotal economic crop, with its leaf growth and development profoundly influenced by light intensity. It specifically aims to investigate how leaf morphology and anticlinal growth respond to varying light intensities, including normal light intensity (NL–300 μmol m−2s−1) and lower light intensity (LL–100 μmol m−2s−1). The research elucidates significant morphological shifts in cigar tobacco leaves under LL, revealing notable alterations in leaf area, leaf length, and leaf width. Early reductions in leaf dimensions, ranging from 30% to 48%, were succeeded by a substantial enhancement in expansion rates from day 9 to day 26, contributing to expanded leaf surfaces at later stages. Upper epidermis thickness declined by 29-19%, with a notably slower expansion rate in the initial 20 days. Palisade cell length consistently decreased by 52-17%, corresponding with upper epidermis trends. Spongy tissue thickness was reduced by 31-12%, with a slower expansion rate in LL for the initial 14 days, and leaf thickness dropped by 34-11%. LL resulted in slower leaf anticlinal expansion, leading to reduced leaf thickness (LT). LL significantly influenced phytohormones in cigar tobacco leaves. Gibberellic acid (41% to 16%) and auxin (20% to 35%) levels were found in higher amounts, while cytokinin levels (19% to 5%) were lowered compared to NL, indicating the intricate regulatory role of light in hormonal dynamics. The observed increase in LT and different cell layers at specific time points (day 8, day 12, day 24, and day 28) under LL, although lower than NL, may be attributed to elevated expression of genes related to cell expansion, includingGRF1,XTH, andSAUR19at those time points. This comprehensive understanding elucidates the intricate mechanisms by which light intensity orchestrates the multifaceted processes governing leaf anatomy and anticlinal expansion in cigar tobacco plants.

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Section: Discussionmentioning

confidence: 99%

Exploration of the intricacies of low light-induced changes in cigar tobacco leaf anticlinal growth: A holistic approach from anatomical and hormonal levels to gene expression

Ma,

Yang,

Ren

et al. 2023

Preprint

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“…The leaf-related traits such as area and size determine the photosynthetic capacity of plants, thereby these traits regulate potential fruit yield and quality ( Zhang et al., 2021 ). Thus, the genetic factors responsible for the regulation of leaf traits in jujube trees are invaluable for both selective breeding efforts and clarification of the mechanisms governing plant developmental biology.…”

Section: Discussionmentioning

confidence: 99%

Construction of a highly saturated genetic map and identification of quantitative trait loci for leaf traits in jujube

et al. 2022

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Chinese jujube (Ziziphus jujuba Mill.), a member of the genus Ziziphus, which comes under the family Rhamnaceae, is the most important species in terms of its economic, ecological, and social benefits. To dissect the loci associated with important phenotypical traits and analyze their genetic and genomic information in jujube, a whole-genome resequencing (WGR) based highly saturated genetic map was constructed using an F1 hybrid population of 140 progeny individuals derived from the cross of ‘JMS2’ × ‘Jiaocheng 5’. The average sequencing depth of the parents was 14.09× and that of the progeny was 2.62×, and the average comparison efficiency between the sample and the reference genome was 97.09%. Three sets of genetic maps were constructed for a female parent, a male parent, and integrated. A total of 8,684 markers, including 8,158 SNP and 526 InDel markers, were evenly distributed across all 12 linkage groups (LGs) in the integrated map, spanning 1,713.22 cM with an average marker interval of 0.2 cM. In terms of marker number and density, this is the most saturated genetic map of jujube to date, nearly doubling that of the best ones previously reported. Based on this genetic map and phenotype data from 2019 to 2021, 31 leaf trait QTLs were identified in the linkage groups (LG1, 15; LG3, 1; LG5, 8; LG7, 4; LG8, 1, and LG11, 2), including 17 major QTLs. There were 4, 8, 14, and 5 QTLs that contributed to leaf length, leaf width, leaf shape index, and leaf area, respectively. Six QTLs clusters were detected on LG1 (8.05 cM–9.52 cM; 13.12 cM–13.99 cM; 123.84 cM–126.09 cM), LG5 (50.58 cM–50.86 cM; 80.10 cM–81.76 cM) and LG11 (35.98 cM–48.62 cM). Eight candidate genes were identified within the QTLs cluster regions. Annotation information showed that 4 genes (LOC107418196, LOC107418241, LOC107417968, and LOC112492570) in these QTLs are related to cell division and cell wall integrity. This research will provide a valuable tool for further QTL analysis, candidate gene identification, map-based gene cloning, comparative mapping, and marker-assisted selection (MAS) in jujube.

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“…Additionally, the plant leaf, the main organ of photosynthesis, is an important regulator of growth. Zhang et al [26] investigated leaf length, width, thickness, area, leaf mass per area (LMA), and cell size from two genotypes and profiled the transcriptome-wide gene expression patterns through RNA sequencing. The results show that the leaf area of Pd was significantly larger than that of Ps, but the epidermal cell area was significantly smaller than that of Ps.…”

Section: Genetic Research On Plant Developmentmentioning

confidence: 99%

Genetic Research and Plant Breeding

Kang

Cho

2022

Genes

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Leaf Size Development Differences and Comparative Transcriptome Analyses of Two Poplar Genotypes

Cited by 19 publications

References 50 publications

Exploration of the intricacies of low light-induced changes in cigar tobacco leaf anticlinal growth: A holistic approach from anatomical and hormonal levels to gene expression

Exploration of the intricacies of low light-induced changes in cigar tobacco leaf anticlinal growth: A holistic approach from anatomical and hormonal levels to gene expression

Construction of a highly saturated genetic map and identification of quantitative trait loci for leaf traits in jujube

Genetic Research and Plant Breeding

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