The underlying molecular conservation and diversification of dioecious flower and leaf buds provide insights into the development, dormancy breaking, flowering, and sex association of willows

Ye, Xiaoxue; Zhao, Xiaoyan; Sun, Yajun; Zhang, Meijiao; Feng, Shuang; Zhou, Aimin; Wu, Wenwu; Ma, Shen; Liu, Shenkui

doi:10.1016/j.plaphy.2021.08.044

Cited by 6 publications

(3 citation statements)

References 36 publications

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“…Environmental stress gradually increased with the approach of the dormant season, Ca 2+ and Na + accumulate in LA buds, demonstrating that Ca 2+ and Na + play important roles in the sensitivity of the treeline tree L. chinensis to environmental stress (Figure 1a). However, ion homeostasis at low Na + and high K + concentrations is important for maintaining metabolic and physiological processes in plants, excess Na + is excreted extracellularly, and high cytoplasmic potassium concentrations are maintained (Zhu, 2003; Fan et al, 2015b; Ye et al, 2021). Thus, we observed a sharp decrease in the amount of Na + in L. chinensis after LA (Figure 1b).…”

Section: Discussionmentioning

confidence: 99%

Multiomics analyses reveal the mechanisms of the responses of subalpine treeline trees to phenology and winter low‐temperature stress

Yu,

Zhang,

Dang

et al. 2024

Physiologia Plantarum

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Withstanding extreme cold stress is a prerequisite for alpine treeline trees to persist and survive. However, the underlying mechanism by which treeline trees sense phenological changes and survive hard winters has not been fully elucidated. Here, we investigated the physiology, transcriptome, and metabolome of the subalpine treeline species Larix chinensis to identify the molecular mechanism of phenological and cold resistance. Calcium and antioxidant enzyme activities (e.g., superoxide dismutase and glutathione peroxidase) are essential for coping with winter cold stress in L. chinensis. Transcriptome analysis revealed that circadian rhythm and phytohormone signalling transduction played important roles in regulating L. chinensis phenological changes and cold stress responses. The variations in the transcriptome identified were accompanied by the specific accumulation of flavones, flavonols, and monosaccharides. The flavonoid biosynthesis and phenylpropanoid biosynthesis pathways played important roles in the adaptation of L. chinensis to the extreme winter environment, and flavone and flavonol biosynthesis was an important pathway involved in bud burst. In addition, temperature and photoperiod had synergistic influences on the formation and release of bud dormancy. Thus, our findings provided new insights into the mechanism of subalpine treeline formation.

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Section: Discussionmentioning

confidence: 99%

Multiomics analyses reveal the mechanisms of the responses of subalpine treeline trees to phenology and winter low‐temperature stress

Yu,

Zhang,

Dang

et al. 2024

Physiologia Plantarum

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“…P. tomentosa is one of the dioecious plants that refers to seed plants with unisexual flowers and where the female and male flowers grow on different plants [ 14 , 15 ]. In the last several years, many studies have focused mainly on physiological and biochemical indicators [ 16 , 17 ] and molecular biotechnology [ 18 , 19 ].…”

Section: Introductionmentioning

confidence: 99%

Gender Discrimination of Flower Buds of Mature Populus tomentosa by HPLC Fingerprint Combined with Chemometrics

et al. 2022

International Journal of Analytical Chemistry

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A high performance liquid chromatography-diode array detector (HPLC-DAD) was used to establish the HPLC fingerprint. Chemometrics methods were used to discriminate against the gender of flower buds of Populus tomentosa based on areas of common peaks calibrated with the HPLC fingerprint. The score plot of principal component analysis (PCA) showed a clear grouping trend (R2X, 0.753; Q2, 0.564) between female and male samples. Two groups were also well discriminated with orthogonal partial least squares-discriminant analysis (OPLS-DA) (R2X, 0.741; R2Y, 0.980; Q2, 0.970). As the hierarchical clustering analysis (HCA) heatmap showed, all samples were separated into two groups. Four compounds were screened out by S-plot and variable importance in projection (VIP > 1.0). Two of them were identified as siebolside B and tremulacin. This study demonstrated that HPLC fingerprints combined with chemometrics can be applied to discriminate against dioecious plants and screen differences, providing a reference for identifying the gender of dioecious plants.

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“…However, array-based technologies often have limitations in the accuracy of expression measurements, especially for the genes with low expression abundance [15]. With the rapid development of sequencing technology, RNA-seq has been widely used to detect the genome-wide gene expression changes and to identify candidate genes resistant to salt stress [16][17][18][19][20]. Similar studies were also performed in rice [21,22], but very few salt-treated timepoints were included.…”

Section: Introductionmentioning

confidence: 99%

Comparative Transcriptional Analysis of Two Contrasting Rice Genotypes in Response to Salt Stress

Tie

et al. 2022

Agronomy

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Improving rice salt-tolerance is an effective way to deal with the increasing food demand caused by soil salinization and population growth. Nevertheless, the molecular mechanisms of rice salt-tolerance remain elusive. In this study, comparative transcriptomic analyses were performed to identify salt-tolerance genes that were either specifically regulated or more changed in salt-tolerant cultivar FL478 relative to salt-sensitive cultivar 93-11. In total, 1423, 175, and 224 salt-tolerance genes were identified under 200 mM NaCl treatment for 6 h, 24 h, and 72 h, respectively. These genes were commonly enriched in transport and peroxidase/oxidoreductase activity across all timepoints, but specially enriched in transcription regulator activity at 6 h under salt stress. Further analysis revealed that 53 transporters, 38 transcription factors (TFs), and 23 reactive oxygen species (ROS) scavenging enzymes were involved in salt adaptation of FL478, and that overall, these salt-tolerance genes showed a faster transcriptional expression response in FL478 than in 93-11. Finally, a gene co-expression network was constructed to highlight the regulatory relationships of transporters, TFs, and ROS scavenging genes under salt-stress conditions. This work provides an overview of genome-wide transcriptional analysis of two contrasting rice genotypes in response to salt stress. These findings imply a crucial contribution of quickly transcriptional changes to salt tolerance and provide useful genes for genetic improvement of salt tolerance in rice.

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The underlying molecular conservation and diversification of dioecious flower and leaf buds provide insights into the development, dormancy breaking, flowering, and sex association of willows

Cited by 6 publications

References 36 publications

Multiomics analyses reveal the mechanisms of the responses of subalpine treeline trees to phenology and winter low‐temperature stress

Multiomics analyses reveal the mechanisms of the responses of subalpine treeline trees to phenology and winter low‐temperature stress

Gender Discrimination of Flower Buds of Mature Populus tomentosa by HPLC Fingerprint Combined with Chemometrics

Comparative Transcriptional Analysis of Two Contrasting Rice Genotypes in Response to Salt Stress

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