Sucrose-induced bud outgrowth in Chrysanthemum morifolium involves changes of auxin transport and gene expression

Liu, Weixin; Peng, Bo; Song, Aiping; Jiang, Jiafu; Chen, Fadi

doi:10.1016/j.scienta.2022.110904

Cited by 7 publications

(2 citation statements)

References 63 publications

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“…2– 3 ) and GO and KEGG enrichment analysis, we speculated that plant hormones may play a major role in the response of the rhizome to temperature. It has been reported that auxin plays a major role in regulating axillary bud outgrowth, and it is also necessary for plant gravitropic responses (Li et al 2020b ; Liu et al 2022b ; Ongaro and Leyser 2007 ; Žádníková et al 2015 ; Zhang et al 2018 ). There were sixteen DEGs that associated with auxin-responsive genes in plant hormone signal transduction, including 5 Aux / IAA genes, 6 GH3 genes and 5 SAUR genes.…”

Section: Resultsmentioning

confidence: 99%

Temperature Effect on Rhizome Development in Perennial rice

Wang,

Li,

Fan

et al. 2024

Rice

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Traditional agriculture is becoming increasingly not adapted to global climate change. Compared with annual rice, perennial rice has strong environmental adaptation and needs fewer natural resources and labor inputs. Rhizome, a kind of underground stem for rice to achieve perenniallity, can grow underground horizontally and then bend upward, developing into aerial stems. The temperature has a great influence on plant development. To date, the effect of temperature on rhizome development is still unknown. Fine temperature treatment of Oryza longistaminata (OL) proved that compared with higher temperatures (28–30 ℃), lower temperature (17–19 ℃) could promote the sprouting of axillary buds and enhance negative gravitropism of branches, resulting in shorter rhizomes. The upward growth of branches was earlier at low temperature than that at high temperature, leading to a high frequency of shorter rhizomes and smaller branch angles. Comparative transcriptome showed that plant hormones played an essential role in the response of OL to temperature. The expressions of ARF17, ARF25 and FucT were up-regulated at low temperature, resulting in prospectively asymmetric auxin distribution, which subsequently induced asymmetric expression of IAA20 and WOX11 between the upper and lower side of the rhizome, further leading to upward growth of the rhizome. Cytokinin and auxin are phytohormones that can promote and inhibit bud outgrowth, respectively. The auxin biosynthesis gene YUCCA1 and cytokinin oxidase/dehydrogenase gene CKX4 and CKX9 were up-regulated, while cytokinin biosynthesis gene IPT4 was down-regulated at high temperature. Moreover, the D3 and D14 in strigolactones pathways, negatively regulating bud outgrowth, were up-regulated at high temperature. These results indicated that cytokinin, auxins, and strigolactones jointly control bud outgrowth at different temperatures. Our research revealed that the outgrowth of axillary bud and the upward growth of OL rhizome were earlier at lower temperature, providing clues for understanding the rhizome growth habit under different temperatures, which would be helpful for cultivating perennial rice.

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Section: Resultsmentioning

confidence: 99%

Temperature Effect on Rhizome Development in Perennial rice

Wang,

Li,

Fan

et al. 2024

Rice

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“…The growth of lateral branches is regulated by the antagonistic coupling of sugar and IAA levels. In vitro experiments have shown that the provision of exogenous sucrose partially counteracts the inhibitory effect of IAA and reduces endogenous IAA levels [59,60]. Additionally, the elongation of lateral branches induced by exogenous sucrose has been associated with the synthesis of CTK and the downregulation of the SL signalling gene (MAX2) [56].…”

Section: Discussionmentioning

confidence: 99%

Hormone Signals Involved in the Regulation of Cucumber Seedling Lateral Branch Elongation by Far-Red Light

Li,

Tian,

Ran

et al. 2024

Agronomy

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Cucumber (Cucumis sativus L.) lateral branch elongation is influenced by a variety of environmental signals, including light [e.g., far-red (FR) light] and hormones. In this experiment, the effect of FR light on the lateral branch elongation of cucumber (‘Zhongnong No. 26’) seedlings was investigated. The results showed that FR light significantly inhibited the lateral branch elongation of cucumber seedlings. In addition, FR light significantly increased the auxin (indole-3-acetic acid, IAA) content, decreased the cytokinin (CTK; Zeatin) content, and suppressed the expression of most CTK synthetic-related genes, such as IPTs, in cucumber seedlings. The lateral branch elongation of cucumber seedlings was assessed in response to decapitation and exogenous 6-BA treatment to further investigate the relationship between IAA and CTK on the lateral branch elongation of cucumber seedlings under FR light. Both decapitation and exogenous 6-BA treatment eliminated the inhibitory effect of FR light on the lateral branch elongation of cucumber seedlings. In conclusion, these results indicated that IAA and CTK were involved in the regulatory effects of FR light on cucumber seedling lateral branch elongation.

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Auxin mediated elevated CO2-induced stolon growth and soluble sugar accumulation in creeping bentgrass

Li,

Wang,

et al. 2024

Environmental and Experimental Botany

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Sucrose-induced bud outgrowth in Chrysanthemum morifolium involves changes of auxin transport and gene expression

Cited by 7 publications

References 63 publications

Temperature Effect on Rhizome Development in Perennial rice

Temperature Effect on Rhizome Development in Perennial rice

Hormone Signals Involved in the Regulation of Cucumber Seedling Lateral Branch Elongation by Far-Red Light

Auxin mediated elevated CO2-induced stolon growth and soluble sugar accumulation in creeping bentgrass

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