Nitrogen and nitric oxide regulate Arabidopsis flowering differently

Zhang, Zhongwei; Fu, Yu‐Fan; Zhou, Yang-Hong; Wang, Changquan; Lan, Ting; Chen, Guangdeng; Zeng, Jian; Chen, Yang-Er; Yuan, Ming; Yuan, Shu; Hu, Jinyao

doi:10.1016/j.plantsci.2019.04.015

Cited by 25 publications

(15 citation statements)

References 35 publications

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“…The SSR marker SAU00063 with the strongest association is in the unigene (c33464.graph_c0) that was annotated to encode a LHYlike protein ( Table 5). The LHY (Late Elongated Hypocotyl) gene has been shown to regulate flower timing in a number of plants (e.g., Ramos-Sanchez et al, 2019;Zhang et al, 2019). Our work in the present study provides a foundation for gene discovery of flower timing in Hermerocallis.…”

Section: Discussionmentioning

confidence: 65%

Characterization of Hemerocallis citrina Transcriptome and Development of EST-SSR Markers for Evaluation of Genetic Diversity and Population Structure of Hemerocallis Collection

Hou

et al. 2020

Front. Plant Sci.

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Hemerocallis spp. commonly known as daylilies and night lilies, are among the most popular ornamental crops worldwide. In Eastern Asia, H. citrina is also widely cultivated as both a vegetable crop and for medicinal use. However, limited genetic and genomic resources are available in Hemerocallis. Knowledge on the genetic diversity and population structure of this species-rich genus is very limited. In this study, we reported transcriptome sequencing of H. citrina cv. 'Datonghuanghua' which is a popular, highyielding variety in China. We mined the transcriptome data, identified and characterized the microsatellite or simple sequence repeat (SSR) sequences in the expressed genome. From ∼14.15 Gbp clean reads, we assembled 92,107 unigenes, of which 41,796 were annotated for possible functions. From 41,796 unigenes, we identified and characterized 3,430 SSRs with varying motifs. Forty-three SSRs were used to fingerprint 155 Hemerocallis accessions. Clustering and population structure analyses with the genotypic data among the 155 accessions reveal broader genetic variation of daylilies than the night lily accessions which form a subgroup in the phylogenetic tree. The night lily group included accessions from H. citrina, H. lilioasphodelus, and H. minor, the majority of which bloom in the evening/night, whereas the ∼100 daylily accessions bloomed in the early morning suggesting flowering time may be a major force in the selection of night lily. The utility of these SSRs was further exemplified in association analysis of blooming time among these accessions. Twelve SSRs were found to have significant associations with this horticulturally important trait.

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Section: Discussionmentioning

confidence: 65%

Characterization of Hemerocallis citrina Transcriptome and Development of EST-SSR Markers for Evaluation of Genetic Diversity and Population Structure of Hemerocallis Collection

Hou

et al. 2020

Front. Plant Sci.

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“…NO (nitric Oxide) levels are involved in flowering, as demonstrated in Oncidium’s 25 and Arabidopsis 34 . Application of NO donor on Arabidopsis vtc1 mutant caused late flowering, and the expression levels of flowering-associated genes (AtCO, AtFT , and At LFY) were reduced, suggesting NO signaling is part of flowering 25,26 . Reducing the amount of NO in Arabidopsis plants promoted flowering, increasing NO inhibited flowering 34 , as was shown here.…”

Section: Discussionmentioning

confidence: 98%

“…Kumar et al 25 demonstrated that Oncidium’s flowering is mediated by NO (nitric Oxide) levels, suggesting that NO controlled the phase transition and flowering process 25 . Application of sodium nitroprusside (NO donor) to Arabidopsis vtc1 mutant caused late flowering, and expression levels of flowering-associated genes ( CO, FT , and LFY ) were reduced, suggesting NO signaling is vital for flowering 25,26 . As the induction to flowering or vegetation pattern relies on the balance between the expression levels of genes in the PEBP gene family (phosphatidylethanolamine-binding protein) like FT1 or FT2 21,24,27 mutations in these homologous genes have different consequences on flowering or vegetative growth.…”

Section: Introductionmentioning

confidence: 99%

Florigen governs shoot regeneration

Kutsher

Fisler

Faigenboim

et al. 2021

Preprint

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It is widely known that during the reproductive stage (flowering), plants do not root well. Most protocols of shoot regeneration in plants utilize juvenile tissue. Adding these two realities together encouraged us to studied the role of florigen in shoot regeneration. Mature tobacco tissue that expresses the endogenous tobacco florigen mRNA regenerates poorly, while juvenile tissue that does not express the florigen regenerates shoots well. Inhibition of Nitric Oxide (NO) synthesis reduced shoot regeneration as well as promoted flowering and increased tobacco florigen level. In contrast, the addition of NO (by way of NO donor) to the tissue increased regeneration, delayed flowering, reduced tobacco florigen mRNA. Ectopic expression of florigen genes in tobacco or tomato decreased regeneration capacity significantly. Overexpression pear PcFT2 gene increased regeneration capacity. During regeneration, florigen mRNA was not changed. We conclude that florigen presence in mature tobacco leaves reduces roots and shoots regeneration and is the possible reason for the age-related decrease in regeneration capacity.

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“…Thus, NO was proposed to interact with the photoperiod pathway to regulate CO expression through a GI-dependent pathway. A recent study revealed that this interaction depends on sugar signaling (Zhang et al, 2019). Sucrose supplementation reversed the effects of NO treatment over CO and GI transcripts.…”

Section: Photoperiodic Signaling and Phytohormonesmentioning

confidence: 97%

Photoperiodic Signaling and Senescence, an Ancient Solution to a Modern Problem?

2021

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The length of the day (photoperiod) is a robust seasonal signal originated by earth orbital and translational movements, a resilient external cue to the global climate change, and a predictable hint to initiate or complete different developmental programs. In eukaryotic algae, the gene expression network that controls the cellular response to photoperiod also regulates other basic physiological functions such as starch synthesis or redox homeostasis. Land plants, evolving in a novel and demanding environment, imbued these external signals within the regulatory networks controlling organogenesis and developmental programs. Unlike algae that largely have to deal with cellular physical cues, within the course of evolution land plants had to transfer this external information from the receiving organs to the target tissues, and mobile signals such as hormones were recruited and incorporated in the regulomes. Control of senescence by photoperiod, as suggested in this perspective, would be an accurate way to feed seasonal information into a newly developed function (senescence) using an ancient route (photoperiodic signaling). This way, the plant would assure that two coordinated aspects of development such as flowering and organ senescence were sequentially controlled. As in the case of senescence, there is growing evidence to support the idea that harnessing the reliability of photoperiod regulation over other, more labile signaling pathways could be used as a robust breeding tool to enhance plants against the harmful effects of climate change.

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Nitrogen and nitric oxide regulate Arabidopsis flowering differently

Cited by 25 publications

References 35 publications

Characterization of Hemerocallis citrina Transcriptome and Development of EST-SSR Markers for Evaluation of Genetic Diversity and Population Structure of Hemerocallis Collection

Characterization of Hemerocallis citrina Transcriptome and Development of EST-SSR Markers for Evaluation of Genetic Diversity and Population Structure of Hemerocallis Collection

Florigen governs shoot regeneration

Photoperiodic Signaling and Senescence, an Ancient Solution to a Modern Problem?

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