Molecular cloning and expression of a 9-cis-epoxy carotenoid dioxygenase gene (NCED) and its relationship to dormancy inLilium longiflorumand L.formosanum

Mojtahedi, Narges; Masuda, Junko; Hải, Nguyễn Thị Thanh; Kojima, Kiyohide; Chino, Fumitaka; Hiramatsu, Michikazu; Mizunoe, Yuki; Okubo, Hiroshi

doi:10.1080/14620316.2015.11513162

Cited by 3 publications

(3 citation statements)

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“…The expression of the LlFT , AP1‐like and the RAV1‐like genes contrasted between these two conditions (cold exposure and glycerol treatment). The LlNCED gene, related to dormancy (Mojtahedi et al ., ), was not expressed in the meristems and its expression in the scales increased by almost 40 as a consequence of glycerol treatment in bulbs (Table ).…”

Section: Resultsmentioning

confidence: 99%

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The proof is in the bulb: glycerol influences key stages of lily development

et al. 2018

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A bulb is a whole plant condensed into an underground organ. A geophyte's bulb comprises both food reserves and important developmental history that may affect its whole growth. In Easter lily (Lilium longiflorum), bulb size is associated with the plant's flowering pathwayvernalization or photoperiodand also affects sprouting, flower quality and abortion rate. The aim of this study was to investigate the reasons for the major physiological differences between large and small bulbs. Lily bulbs start their development from secondary meristems along the stem, with large bulbs being heavier and bear more scales than small ones. Peeling the outer scales of a large bulb converts its physiological responses into those of a small bulb, implying that the physiological discrepancies in plants developing from large or small bulbs are mediated by factors inherent to the bulb. We therefore performed broad analyses of the metabolite composition in the scales of bulbs subjected to temperature regimes affecting further plant development. We found a striking association between the level of glycerol, a primary metabolite mostly synthesized in the outer scales, and a delay in sprouting and flowering time, and reduction in abortion rate. Exogenous glycerol application to the bulbs before planting corroborated these results. Moreover, transcriptome analyses showed that flowering-promoting gene expression was downregulated in the bulb after glycerol treatment, while potential flowering inhibitor as well as a dormancy-related gene expressions were upregulated. Based on these studies, we postulate that glycerol is a major factor influencing both vegetative and reproductive development in lily.

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Section: Resultsmentioning

confidence: 99%

“…The expression of the LlNCED gene, involved in dormancy regulation in Lilium (Mojtahedi et al ., ) was greatly enhanced by glycerol treatment. This fact may explain the sprouting delay and inhibition in heat‐treated bulbs (Table ), where high level of glycerol was detected (Table ).…”

Section: Discussionmentioning

confidence: 96%

The proof is in the bulb: glycerol influences key stages of lily development

et al. 2018

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“…Chinensis might be regulated by a gene Narcissus FT gene homologue (NtFT) [84]. In a monocot Lilium longiflorum, SD is induced by higher temperature and accumulation of ABA, which is under the control of 9-cis-epoxycarotenoid dioxygenase (NCED) gene [85]. Similarly, in grapevine (Vitis vinifera), genes related to growth regulators ABA, auxin, ethylene, and salicylic acid metabolism are involved in regulating summer dormancy and relaxation [86].…”

Section: Genetic Control Of Dormancymentioning

confidence: 99%

Insights into Seasonal Dormancy of Perennial Herbaceous Forages

Adhikari¹,

Razar²,

Paudel³

et al. 2017

AJPS

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Seasonal dormancy is an adaptive mechanism where plants suspend growth and become physiologically inactive to avoid extreme environmental conditions. Environmental factors like temperature, photoperiod, nutrients, and soil moisture control plant growth and development through various complex molecular mechanisms. Crown and seed dormancy of plants are mostly influenced by day length and temperature. Genes and physiological pathways triggered by these two factors along with genotype variability are some targets to manipulate seasonal dormancy. There is genetic variation in the depth and duration of seasonal dormancy. Therefore, their genetic manipulation is possible. Manipulations of summer and fall dormancy are relatively easier compared to winter dormancy because plants require protection of their apical meristem from freezing temperatures and limited water supply. Genetic factors that regulate seed dormancy may also have regulatory role for seasonal dormancy of the maternal plants. Limited genetic and genomic information are available for seasonal dormancy in herbaceous perennial species. Knowledge of genes controlling seasonal dormancy of eudicots, forest trees, and horticultural crops could be interpolated to explore possible dormancy mechanisms in perennial forages. This study reviews current knowledge of seasonal dormancy of herbaceous forages emphasizing the genetic and physiological context that would be valuable to breeders and plant biologists to expand the production season of perennial species by developing non-dormant and semi-dormant cultivars.

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Cyclic GMP mediates abscisic acid-stimulated isoflavone synthesis in soybean sprouts

Jiao

2019

Food Chemistry

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Molecular cloning and expression of a 9-cis-epoxy carotenoid dioxygenase gene (NCED) and its relationship to dormancy inLilium longiflorumand L.formosanum

Cited by 3 publications

References 1 publication

The proof is in the bulb: glycerol influences key stages of lily development

The proof is in the bulb: glycerol influences key stages of lily development

Insights into Seasonal Dormancy of Perennial Herbaceous Forages

Cyclic GMP mediates abscisic acid-stimulated isoflavone synthesis in soybean sprouts

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