Plastid- and photoreceptor-dependent signaling is required for the response to photoperiod stress

IF 4 3区生物学 Q1 PLANT SCIENCES

Journal of plant physiology Pub Date : 2025-01-10 DOI:10.1016/j.jplph.2025.154429

I. Bajaj Hengge, Anne Cortleven, Thomas Schmülling

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引用次数: 0

Abstract

Prolongation of the light period causes photoperiod stress in plants. The response to photoperiod stress includes the induction of a distinct set of stress marker genes, of reactive oxygen species (ROS), and of stress hormones. In this study, the impact of light intensity and light quality on the photoperiod stress response was investigated. A threshold light intensity of circa 50 μmol m⁻² s⁻¹ is necessary for inducing photoperiod stress, indicating the involvement of chloroplasts. Lower photoperiod stress symptoms in retrograde signaling mutants (gun4, gun5) and mutants with constrained plastid function (glk1 glk2) corroborated the role of chloroplasts. Genetic analysis revealed that the photoreceptors phyB and particularly CRY2 are important to perceive photoperiod stress. Overall, these results showed that both plastid-dependent and photoreceptor-dependent signaling pathways are involved in sensing the light conditions causing photoperiod stress and governing the response to it.

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来源期刊

Journal of plant physiology 生物-植物科学

CiteScore

7.20

自引率

4.70%

发文量

196

审稿时长

32 days

期刊介绍： The Journal of Plant Physiology is a broad-spectrum journal that welcomes high-quality submissions in all major areas of plant physiology, including plant biochemistry, functional biotechnology, computational and synthetic plant biology, growth and development, photosynthesis and respiration, transport and translocation, plant-microbe interactions, biotic and abiotic stress. Studies are welcome at all levels of integration ranging from molecules and cells to organisms and their environments and are expected to use state-of-the-art methodologies. Pure gene expression studies are not within the focus of our journal. To be considered for publication, papers must significantly contribute to the mechanistic understanding of physiological processes, and not be merely descriptive, or confirmatory of previous results. We encourage the submission of papers that explore the physiology of non-model as well as accepted model species and those that bridge basic and applied research. For instance, studies on agricultural plants that show new physiological mechanisms to improve agricultural efficiency are welcome. Studies performed under uncontrolled situations (e.g. field conditions) not providing mechanistic insight will not be considered for publication. The Journal of Plant Physiology publishes several types of articles: Original Research Articles, Reviews, Perspectives Articles, and Short Communications. Reviews and Perspectives will be solicited by the Editors; unsolicited reviews are also welcome but only from authors with a strong track record in the field of the review. Original research papers comprise the majority of published contributions.