Nitric oxide counters ethylene effects on ripening fruits

Manjunatha, Girigowda; Gupta, Kapuganti Jagadis; Lokesh, Veeresh; Mur, Luis A. J.; Neelwarne, Bhagyalakshmi

doi:10.4161/psb.19523

Cited by 107 publications

(77 citation statements)

References 98 publications

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“…Given the importance of ethylene during plant responses to light (Rodrigues et al, 2014;Van de Poel et al, 2015;Weller et al, 2015) and its close interplay with NO during diverse plant responses (Manjunatha et al, 2012;Freschi, 2013), we next analyzed whether NO-ethylene interactions regulate tomato seedling greening and chloroplast development.…”

Section: No and Ethylene Antagonistically Interact During Light-drivementioning

confidence: 99%

Nitric Oxide, Ethylene, and Auxin Cross Talk Mediates Greening and Plastid Development in Deetiolating Tomato Seedlings

et al. 2016

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The transition from etiolated to green seedlings involves the conversion of etioplasts into mature chloroplasts via a multifaceted, light-driven process comprising multiple, tightly coordinated signaling networks. Here, we demonstrate that light-induced greening and chloroplast differentiation in tomato (Solanum lycopersicum) seedlings are mediated by an intricate cross talk among phytochromes, nitric oxide (NO), ethylene, and auxins. Genetic and pharmacological evidence indicated that either endogenously produced or exogenously applied NO promotes seedling greening by repressing ethylene biosynthesis and inducing auxin accumulation in tomato cotyledons. Analysis performed in hormonal tomato mutants also demonstrated that NO production itself is negatively and positively regulated by ethylene and auxins, respectively. Representing a major biosynthetic source of NO in tomato cotyledons, nitrate reductase was shown to be under strict control of both phytochrome and hormonal signals. A close NO-phytochrome interaction was revealed by the almost complete recovery of the etiolated phenotype of red light-grown seedlings of the tomato phytochrome-deficient aurea mutant upon NO fumigation. In this mutant, NO supplementation induced cotyledon greening, chloroplast differentiation, and hormonal and gene expression alterations similar to those detected in light-exposed wild-type seedlings. NO negatively impacted the transcript accumulation of genes encoding phytochromes, photomorphogenesis-repressor factors, and plastid division proteins, revealing that this free radical can mimic transcriptional changes typically triggered by phytochrome-dependent light perception. Therefore, our data indicate that negative and positive regulatory feedback loops orchestrate ethylene-NO and auxin-NO interactions, respectively, during the conversion of colorless etiolated seedlings into green, photosynthetically competent young plants.

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Section: No and Ethylene Antagonistically Interact During Light-drivementioning

confidence: 99%

Nitric Oxide, Ethylene, and Auxin Cross Talk Mediates Greening and Plastid Development in Deetiolating Tomato Seedlings

et al. 2016

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“…Mishina et al [160] found that delayed leaf senescence in Arabidopsis involves NO-induced reduction in SA levels. During fruit ripening, NO cross talk with SA and ET involves the regulation of levels of secondary metabolites such as anthocyanins [161]. NO-induced suppression of cell wall softening related enzymes such as polygalacturonase (PG), pectin methylesterase (PME), and pectate lyase (PL) was found to delay softening and ripening of stored Carica papaya by reducing ABA, IAA and zeatin ribose (ZR) levels [123].…”

Section: Contrasting Reports Inmentioning

confidence: 99%

Cross Talk between Nitric Oxide and Phytohormones Regulate Plant Development during Abiotic Stresses

Nawaz¹,

Shabbir²,

Shahbaz³

et al. 2017

Phytohormones - Signaling Mechanisms and Crosstalk in Plant Development and Stress Responses

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Plants, being sessile, are concurrently exposed to various biotic and abiotic stresses. The perception of stress signals in plants involves a wide spectrum of signal transduction pathways that interact to induce tolerance against adverse environmental conditions. This functional overlapping among various stress signaling cascades also leads to the expression of genes that regulate biosynthesis or action of other hormones. Phytohormonal signals, activated by both developmental and environmental responses, play a crucial role to develop stress tolerance in plants. Nitric oxide (NO) is one of the major players in plant signaling networks. Emerging evidence supports that NO interplays with signaling pathways of auxins, gibberellins, abscisic acid, ethylene, jasmonic acid, brassinosteroids, and other plant hormones to control metabolism, growth, and development in plants. This chapter focuses on the current state of knowledge of cross talk between signaling pathways of NO and phytohormones in plants exposed to various abiotic stresses.

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“…Similarly, a negative correlation between both of these gases was also reported during fruit ripening (Freschi, 2013;Manjunatha et al, 2012). By contrast, NO is shown to stimulate ethylene production by up regulating the ethylene biosynthesis genes in Arabidopsis and cucumber, while ethylene precursor promoted NO production in senescing leaves (Manjunatha et al, 2012). Similar to ethylene, a general antagonism was documented between Gibberellic acid (GA) and NO during root growth and photomorphogenesis in Arabidopsis (Freschi, 2013;Leon et al, 2011).…”

mentioning

confidence: 85%

“…This kind of negative relation is also observed during stomatal closure, where ethylene inhibited stomatal closure when combined with either ABA or NO (Desikan et al, 2006). Similarly, a negative correlation between both of these gases was also reported during fruit ripening (Freschi, 2013;Manjunatha et al, 2012). By contrast, NO is shown to stimulate ethylene production by up regulating the ethylene biosynthesis genes in Arabidopsis and cucumber, while ethylene precursor promoted NO production in senescing leaves (Manjunatha et al, 2012).…”

mentioning

confidence: 90%

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Interaction of Nitric Oxide with Phytohormones under Drought Stress

Adimulam

Bhatnagar‐Mathur

Santisree

2017

JPS

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Plants are often exposed to a plethora of stress conditions such as salinity, extreme temperatures, drought, and heavy metals that can greatly impact farmer's income. Nitric oxide (NO) has been implicated in resistance to various plant stresses and hence gaining increasing attention from plant researchers. NO mediate various abiotic and biotic stresses in plants including drought stress. However, it is still unclear about the actual involvement of NO in drought stress responses at a whole plant level. Whether NO act alone or in coherence with other phytohormones and signaling molecules is an open question till now. Here we summarized the interaction of NO with the well-known phytohormones in coping with the drought stress.

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Nitric oxide counters ethylene effects on ripening fruits

Cited by 107 publications

References 98 publications

Nitric Oxide, Ethylene, and Auxin Cross Talk Mediates Greening and Plastid Development in Deetiolating Tomato Seedlings

Nitric Oxide, Ethylene, and Auxin Cross Talk Mediates Greening and Plastid Development in Deetiolating Tomato Seedlings

Cross Talk between Nitric Oxide and Phytohormones Regulate Plant Development during Abiotic Stresses

Interaction of Nitric Oxide with Phytohormones under Drought Stress

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