Molecular regulation of bud dormancy in perennial plants

Cai, Fangfang; Jin, Xin; Tian, Ye; Huang, Zheng‐Ming; Wang, Xiaoli; Zhang, Yanping; Sun, Yifeng; Shao, Changsheng

doi:10.1007/s10725-023-00983-5

Cited by 12 publications

(6 citation statements)

References 56 publications

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“…With global climate warming, the phenomenon of abnormal flowering of deciduous fruit trees due to insufficient cold demand is becoming increasingly apparent [30]. As an adaptive performance of deciduous fruit trees to resist external stress, dormancy has been increasingly studied in recent years [31,32]. The most important aspect of dormancy research is to determine the time for flower buds to enter and release internal dormancy, which is the basis for all subsequent studies [33,34].…”

Section: Discussionmentioning

confidence: 99%

Comparative Analysis of Transcriptomes to Identify Genes during Bud Dormancy of Pyrus pyrifolia ‘Huanghua’

Wang,

Liu,

et al. 2024

Horticulturae

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The study of pear dormancy mechanisms is currently a major research area in pear production and has high economic significance for agricultural production. We selected the southern sand pear cultivar Pyrus pyrifolia ‘Huanghua’ as the test material to study the pear dormancy process through microscopic observation of pear flower buds. The endodormancy period is abbreviated as D_bud. Similarly, the endodormancy release initiation period and the ecodormancy period are referred to as DB_bud and G_bud, respectively. Meanwhile, RNA sequencing was used to obtain the gene expression profile of Pyrus pyrifolia ‘Huanghua’ flower buds. The RNA sequencing results indicated that there were 224 differentially expressed genes (DEGs) in endodormancy (D) vs. endodormancy release initiation period (DB), while 975 were identified between endodormancy and ecodormancy (G). Finally, a total of 868 DEGs were found in the DB vs. G comparison. The expression levels of the genes Pbr009498.1 (LAX1-1), Pbr012348.1 (LAX1-2), Pbr021158.1 (GH35), and Pbr031621.1 (LAX2) encoding IAA were significantly higher during the DB_bud than during the D_bud. The expression level of Pbr025864.2 (IAA13) during the D_bud was significantly higher than the DB_bud and G_bud. The Pbr041942.1 (GID1B) gene also showed a significant increase during ecodormancy. Taken together, these results suggest that these genes, annotated as LAX1, GH35, LAX2, IAA13, and GID1C, are involved in endodormancy maintenance and in the transition from endodormancy to ecodormancy in Pyrus pyrifolia ‘Huanghua’.

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Section: Discussionmentioning

confidence: 99%

Comparative Analysis of Transcriptomes to Identify Genes during Bud Dormancy of Pyrus pyrifolia ‘Huanghua’

Wang,

Liu,

et al. 2024

Horticulturae

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“…The endogenous factors influencing and/or controlling dormancy release are interconnected with environmental cues, forming a highly complex regulatory network [25,[74][75][76][77][78]. Thus, when investigating developmental changes in biochemical parameters in the field of dormancy research, it is of particular importance to also consider the environmental conditions that occur during the period of observation.…”

Section: Discussionmentioning

confidence: 99%

Breaking Buds—Stop and Go? Acid Invertase Activities in Apple Leaf Buds during Dormancy Release until Bud Break

Hubmann,

Roth,

Monschein

2023

Agronomy

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Bud dormancy enables deciduous fruit trees to endure unfavorable conditions during winter, and considerably impacts growth and reproduction in spring. We investigated acid invertase activities during dormancy release until bud break under natural (orchard) conditions in two consecutive years. Our aim was to relate the activity patterns to the developmental progression and to air temperature, which is a major factor influencing the developmental processes at that stage. The enzyme assays were performed on extracts from leaf buds of the cultivar Idared, sampled from early March to April in the years 2020 and 2021. The air temperature was continually monitored during the observation periods. cwINV activity showed a trend of slight increase at the earlier developmental stages and sharply increased during bud break in both years. cwINV is known to contribute to organ sink strength. Its up-regulation may, therefore, be related to the increasing developmental demand for carbohydrates in apple leaf buds during dormancy release until bud break. vacINV activity was relatively constant at the earlier stages and also showed a pronounced increase in activity during bud break in both years. However, in both years, we observed drops in vacINV activity following cold spells. vacINV activity has been associated with growth via cell elongation through the regulation of cell turgor and may, thus, be involved in bud break. Therefore, we suggest that the down-regulation of vacINV activity as a consequence of cold spells might contribute to a delay in bud break to protect young leaf tissues from exposure to cold stress conditions.

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“…In a number of tree species, including European chestnuts, apples, pears, and other members of the Rosaceae family, temperature is the primary seasonal stimulus for regulating phenology, with low temperatures inducing bud set and dormancy establishment [25,34]. Recent research indicates that dormancy induction based on day length is only successful within an acceptable temperature range [35][36][37]. In poplar, for example, if the buds are exposed to low temperatures before dormancy is completely set, the dormancy-releasing element activates, leading to impaired bud development and dormancy establishment, as well as inhibiting vernalization.…”

Section: Annual Temperature Variations Determine the Seasonal Pattern...mentioning

confidence: 99%

Molecular Mechanisms of Seasonal Gene Expression in Trees

Chu,

Wang,

Fan

et al. 2024

IJMS

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In trees, the annual cycling of active and dormant states in buds is closely regulated by environmental factors, which are of primary significance to their productivity and survival. It has been found that the parallel or convergent evolution of molecular pathways that respond to day length or temperature can lead to the establishment of conserved periodic gene expression patterns. In recent years, it has been shown in many woody plants that change in annual rhythmic patterns of gene expression may underpin the adaptive evolution in forest trees. In this review, we summarize the progress on the molecular mechanisms of seasonal regulation on the processes of shoot growth, bud dormancy, and bud break in response to day length and temperature factors. We focus on seasonal expression patterns of genes involved in dormancy and their associated epigenetic modifications; the seasonal changes in the extent of modifications, such as DNA methylation, histone acetylation, and histone methylation, at dormancy-associated loci have been revealed for their actions on gene regulation. In addition, we provide an outlook on the direction of research on the annual cycle of tree growth under climate change.

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Molecular regulation of bud dormancy in perennial plants

Cited by 12 publications

References 56 publications

Comparative Analysis of Transcriptomes to Identify Genes during Bud Dormancy of Pyrus pyrifolia ‘Huanghua’

Comparative Analysis of Transcriptomes to Identify Genes during Bud Dormancy of Pyrus pyrifolia ‘Huanghua’

Breaking Buds—Stop and Go? Acid Invertase Activities in Apple Leaf Buds during Dormancy Release until Bud Break

Molecular Mechanisms of Seasonal Gene Expression in Trees

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