Atnoa1 mutant Arabidopsis plants induce compensation mechanisms to reduce the negative effects of the mutation

Majláth, Imre; Szalai, Gabriella; Papp, I.; Vaňková, Radomı́ra; Janda, Tibor

doi:10.1016/j.jplph.2011.01.021

Cited by 6 publications

(1 citation statement)

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“…Despite the frustrated hunt for a bona fide NOS in Arabidopsis, Atnoa1 remains to date the only functional mutant with reduced levels of NO, and as such continues to be used as an experimental tool. Interestingly a compensation mechanism in Atnoa1 mutant Arabidopsis plants to reduce the negative effects of the mutation was suggested, these included photoprotection stimulation and SA and polyamine variations (Majlá th et al, 2011). Moreover, the reason why this mitochondrial enzyme affects the global levels of NO production in the plant remains unknown (Table 1).…”

Section: Nos: the Missing Holy Grail?mentioning

confidence: 99%

Nitric Oxide: A Multitasked Signaling Gas in Plants

et al. 2015

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Nitric oxide (NO) is a gaseous reactive oxygen species (ROS) that has evolved as a signaling hormone in many physiological processes in animals. In plants it has been demonstrated to be a crucial regulator of development, acting as a signaling molecule present at each step of the plant life cycle. NO has also been implicated as a signal in biotic and abiotic responses of plants to the environment. Remarkably, despite this plethora of effects and functional relationships, the fundamental knowledge of NO production, sensing, and transduction in plants remains largely unknown or inadequately characterized. In this review we cover the current understanding of NO production, perception, and action in different physiological scenarios. We especially address the issues of enzymatic and chemical generation of NO in plants, NO sensing and downstream signaling, namely the putative cGMP and Ca(2+) pathways, ion-channel activity modulation, gene expression regulation, and the interface with other ROS, which can have a profound effect on both NO accumulation and function. We also focus on the importance of NO in cell-cell communication during developmental processes and sexual reproduction, namely in pollen tube guidance and embryo sac fertilization, pathogen defense, and responses to abiotic stress.

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Section: Nos: the Missing Holy Grail?mentioning

confidence: 99%