The aerial environment modulates plant responses to blue light

Innes, Sheona N.; Jakobsen, S.B.; Niday, A.; Ali, Haider; Arve, Louise Elisabeth; Torre, Sergio

doi:10.17660/actahortic.2018.1227.66

Cited by 2 publications

(2 citation statements)

References 21 publications

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“…Air humidity can modulate plants’ responses to BL, including plant elongation. Researchers from Norway found that when B LEDs were added to HPS lighting, tomato and cucumber plants under high relative humidity (RH; 90%) were taller compared with those under moderate RH (60%) [ 109 ]. They speculated that BL might have been used more efficiently for the development and function of chlorophyll and stomata under higher air humidity.…”

Section: Factors Affecting Plants’ Elongation Response To Pure Blue L...mentioning

confidence: 99%

Magic Blue Light: A Versatile Mediator of Plant Elongation

Kong,

Zheng

2023

Plants

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Blue light plays an important role in regulating plant elongation. However, due to the limitations of older lighting technologies, the responses of plants to pure blue light have not been fully studied, and some of our understandings of the functions of blue light in the literature need to be revisited. This review consolidates and analyzes the diverse findings from previous studies on blue-light-mediated plant elongation. By synthesizing the contrasting results, we uncover the underlying mechanisms and explanations proposed in recent research. Moreover, we delve into the exploration of blue light-emitting diodes (LEDs) as a tool for manipulating plant elongation in controlled-environment plant production, highlighting the latest advancements in this area. Finally, we acknowledge the challenges faced and outline future directions for research in this promising field. This review provides valuable insights into the pivotal role of blue light in plant growth and offers a foundation for further investigations to optimize plant elongation using blue light technology.

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Section: Factors Affecting Plants’ Elongation Response To Pure Blue L...mentioning

confidence: 99%

Magic Blue Light: A Versatile Mediator of Plant Elongation

Kong,

Zheng

2023

Plants

View full text Add to dashboard Cite

show abstract

“…To compensate for the high rates of water loss in the mutants, the ABA-deficient and the WT plants can be grown at different RHs to ensure the effects of ABA deficiency are compared between leaves of the same RWC and/or leaf water potential (Mäkelä et al, 2003;Okamoto et al, 2009;Sharp et al, 2000;Yaaran et al, 2019). Since growth in high RH affects plant morphology and water relations (Fanourakis et al, 2016;Innes et al, 2018;Innes et al, 2019;Torre et al, 2003), and high RH decreases ABA concentration (Aliniaeifard et al, 2014;Arve et al, 2013;Fanourakis et al, 2011;Okamoto et al, 2009), separating the effects of these two main factors is important but has not been previously investigated. For example, grew plants at a single, high RH (100%) to minimise the effects of leaf water deficit on growth, while Sharp et al (2000) grew WT and ABA-deficient mutants at two different RH levels to minimise differences in leaf water status between…”

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confidence: 99%

Different abscisic acid‐deficient mutants show unique morphological and hydraulic responses to high air humidity

Innes

Solhaug

Torre

et al. 2021

Physiologia Plantarum

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High relative humidity (RH) perturbs plant growth, stomatal functioning and abscisic acid (ABA) homeostasis, but the role of ABA in this physiological regulation is equivocal. To determine the role(s) of ABA in plant responses to high RH, wild-type (WT) tomato and barley plants and their respective ABA-deficient mutants flacca and Az34 (which are mutated in the same locus of the ABA biosynthesis pathway) were grown in contrasting RHs (60% and 90%) to measure biomass partitioning, stomatal traits and water relations. Surprisingly, growth RH did not affect foliar ABA levels in either species. While Az34 showed similar stomatal size and density as WT plants, flacca had larger and more abundant stomata. High RH increased stomatal size in tomato, but decreased it in barley, and decreased stomatal density in tomato, but not in barley. Altered stomatal responses in ABA-deficient plants to high RH had little effect on tomato photosynthesis, but Az34 barley showed lower photosynthesis.ABA deficiency decreased relative shoot growth rate (RGR SHOOT ) in both species, yet this was counteracted by high RH increasing leaf water status in tomato, but not in barley. High RH increased RGR SHOOT in flacca, but not in WT tomatoes, while having no effect on RGR SHOOT in barley, but affecting barley net assimilation rate, leaf area ratio (LAR) and specific leaf area in an ABA-dependent manner. ABA-RH interaction affected leaf development in tomato only. Thus, different crop species show variable responses to both high RH and ABA deficiency, making it difficult to generalise on the role of ABA in growth regulation at contrasting RHs.

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The aerial environment modulates plant responses to blue light

Cited by 2 publications

References 21 publications

Magic Blue Light: A Versatile Mediator of Plant Elongation

Magic Blue Light: A Versatile Mediator of Plant Elongation

Different abscisic acid‐deficient mutants show unique morphological and hydraulic responses to high air humidity

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