Arabidopsis Hormone Database: a comprehensive genetic and phenotypic information database for plant hormone research in Arabidopsis

Peng, Zhiyu; Zhou, Xin; Li, Linchuan; Yu, Xiangchun; Li, Hongjiang; Jiang, Zhiqiang; Cao, Guangyu; Bai, Ming-Yi; Wang, Xingchun; Jiang, Caifu; Lu, Haibin; Hou, Xianhui; Liu, Qu; Wang, Zhiyong; Zuo, Jianru; Fu, Xiangdong; Su, Zhen; Li, Songgang; Guo, Hongwei

doi:10.1093/nar/gkn873

Cited by 53 publications

(44 citation statements)

References 13 publications

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“…Different IPT genes are transcriptionally regulated by auxin in different developmental contexts, such as IPT2 in pea stem nodes and IPT5 and IPT7 in root development, which facilitates specificity of hormone action at developmentally controlled time points. The challenge to further identify such tissue-specific and developmentally specific hormone crosstalk nodes is helped by resources such as the Arabidopsis Hormone Database (http://ahd.cbi.pku.edu.cn; Peng et al 2009), which aims to collate available data on genes and phenotypes regulated by all plant hormones. These data will inform on possible points of crosstalk by identifying coregulated phenotypes and genes.…”

Section: Resultsmentioning

confidence: 99%

“…In contrast to Nemhauser et al (2006), the Arabidopsis Hormone Database (Peng et al 2009) identified 21 transcription factors which were regulated by a total of six hormones, and 17% of all hormone-regulated genes were under control of more than one hormone. Many studies have revealed common transcriptomes for some hormones in certain developmental processes: in Populus stems, a striking 83% of transcripts affected by GA treatment were also regulated by IAA (Björklund et al 2007) in cambial growth.…”

Section: Direct Auxin Crosstalkmentioning

confidence: 99%

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Auxin as compère in plant hormone crosstalk

Chandler

2009

Planta

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The architecture of many hormone perceptions and signalling pathways has been recently well established, together with an awareness that plant hormone responses are the product of networks of interactions involving multiple hormones. As growth is quantitative, so are hormone responses, which underlie a systems approach to development and response. Auxin is arguably one of the best characterised hormones in plant development, and despite many excellent reviews on auxin perception, polar transport, and signal transduction, too little attention has been given to auxin crosstalk. This review, therefore, gives a précis of recent developments in hormone crosstalk involving auxin. For decades, the literature has described the involvement of multiple hormones in particular processes, although the mechanistic bases underlying points of crosstalk have been harder to pinpoint. Crosstalk falls into different categories, such as direct, indirect, or co-regulation. One conclusion for auxin crosstalk is that crosstalk operates extensively via the metabolism of other hormones, however, microarray approaches are increasingly identifying co-regulated genes and nodes of crosstalk at shared signalling components. Auxin crosstalk is often local, and is spatially and temporally regulated to provide adaptive value to environmental conditions and fine-tuning of responses.

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Section: Resultsmentioning

confidence: 99%

Section: Direct Auxin Crosstalkmentioning

confidence: 99%

Auxin as compère in plant hormone crosstalk

Chandler

2009

Planta

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“…Expression of Cyclin D3;1 (CYCD3;1), a positive regulator of cell proliferation, is induced by treatment with brassinosteroids and cytokinins (Riou-Khamlichi et al, 1999;Hu et al, 2000), making it a good candidate. Numerous other genes have been found to be transcriptionally regulated by both hormones (Nemhauser et al, 2006;Peng et al, 2009), but their putative role as a convergence point of brassinosteroid and cytokinin response pathways needs further investigation.…”

Section: Brassinosteroid-cytokinin Cross Talk During Leaf Developmentmentioning

confidence: 99%

Combining Enhanced Root and Shoot Growth Reveals Cross Talk between Pathways That Control Plant Organ Size in Arabidopsis

et al. 2011

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Functionally distinct Arabidopsis (Arabidopsis thaliana) genes that positively affect root or shoot growth when ectopically expressed were combined to explore the feasibility of enhanced biomass production. Enhanced root growth resulting from cytokinin deficiency was obtained by overexpressing CYTOKININ OXIDASE/DEHYDROGENASE3 (CKX3) under the control of the root-specific PYK10 promoter. Plants harboring the PYK10-CKX3 construct were crossed with four different transgenic lines showing enhanced leaf growth. For all combinations, the phenotypic traits of the individual lines could be combined, resulting in an overall growth increase. Unexpectedly, three out of four combinations had more than additive effects. Both leaf and root growth were synergistically enhanced in plants ectopically expressing CKX3 and BRASSINOSTEROID INSENSI-TIVE1, indicating cross talk between cytokinins and brassinosteroids. In agreement, treatment of PYK10-CKX3 plants with brassinolide resulted in a dramatic increase in lateral root growth that could not be observed in wild-type plants. Coexpression of CKX3 and the GROWTH-REGULATING FACTOR5 (GRF5) antagonized the effects of GRF5 overexpression, revealing an interplay between cytokinins and GRF5 during leaf cell proliferation. The combined overexpression of CKX3 and GIBBER-ELLIN 20-OXIDASE1 led to a synergistic increase in leaf growth, suggesting an antagonistic growth control by cytokinins and gibberellins. Only additive effects on root and shoot growth were visible in plants ectopically expressing both CKX3 and ARABIDOPSIS VACUOLAR PYROPHOSPHATASE1, hinting at an independent action mode. Our results show new interactions and contribute to the molecular and physiological understanding of biomass production at the whole plant level.As the world population is estimated to grow to 9.2 billion people by 2050, the availability of plant-derived products has to increase drastically to meet the needs not only for food, feed, and fiber but also for bioenergy and other industrial applications (Borlaug, 2007). In the future, less arable land will be available while more crops will need to be produced. To lower the negative impact on the environment, increasing plant biomass production on existing agricultural land will diminish the demand for new crop acreage (Edgerton, 2009). Whereas traditional breeding combined with improved agronomical practices will not keep up with the increasing global demands, biotechnology can help serve this purpose (Borlaug, 2007). Marker-assisted breeding and introduction of transgenic traits for biotic and abiotic stress resistance have proven to increase crop gain (Eathington et al., 2007;Edgerton, 2009). Furthermore, improving yield by modulating endogenous molecular pathways will be an important feature of the next generation of biotech crops.The introduction of multiple transgenes has become widely adopted (Naqvi et al., 2010); for example, three carotenoid biosynthesis genes enable provitamin A production in transgenic rice (Oryza sativa) cv Golden Rice (Ye et al., 2...

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“…The dwarf phenotype affecting transGR þ resembled mostly those associated to the hormonal imbalance reported by others [19,34,43,44] or due to overexpression of certain regulatory domains [19,20,45]. The hypothesis of a sort of hormonal disturbance generated by transgene overexpression was tested by assaying the sensitivities of transGR þ to exogenously applied phyto-hormones.…”

Section: Restored Hypocotyl and Root Phenotypes After Hormones Treatmmentioning

confidence: 85%

Meloydogine incognita (Nematoda) reproduction affected by plants overexpressing a steroid inducible gene-expression system

Irdani¹,

Bogani

Pastorelli³

2017

Physiological and Molecular Plant Pathology

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a b s t r a c tThis study reports the impact of an integral glucocorticoid expression system (GR-system) on plant and plant-nematode reproduction. Seedlings expressing a GR-system (transGRþ) show affections of growth and development. It is well-known that plant-hormones such as gibberellins, auxins and steroids are essential for developmental and physiological processes, in biotic/abiotic stresses. Here is shown some phenotypic affections reported by tobacco expressing a whole mammalian GR-system, how those effects are rescued by external hormonal treatments and the influence on plant-nematode fecundity. Results demonstrate that: i) GR-system is constitutively expressed in plants and its functionality proved by the activation of the reporter-gene transcription (uidA) after induction with different steroid hormones, dexamethasone (DEX) and progesterone (PRO) as well; ii) transGR þ growth affected at hypocotyls and roots development result mitigated by exogenous hormones applications; iii) no differential expression in the expansin-gene TExp4 assayed; iv) Significant reductions of J2-larvae assessed in the egg-masses and soil during the generations on transformed plants. Although the molecular mechanism behind these results is still unknown, all together these results suggest a role of GR as reflected by the impact on the plant development and reduction of Meloydogine incognita (Nematoda) second-stage juveniles in egg-masses and soil.

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Arabidopsis Hormone Database: a comprehensive genetic and phenotypic information database for plant hormone research in Arabidopsis

Cited by 53 publications

References 13 publications

Auxin as compère in plant hormone crosstalk

Auxin as compère in plant hormone crosstalk

Combining Enhanced Root and Shoot Growth Reveals Cross Talk between Pathways That Control Plant Organ Size in Arabidopsis

Meloydogine incognita (Nematoda) reproduction affected by plants overexpressing a steroid inducible gene-expression system

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