Molecular Profiles of Contrasting Shade Response Strategies in Wild Plants: Differential Control of Immunity and Shoot Elongation

Gommers, Charlotte M.M.; Keuskamp, Diederik H.; Buti, Sara; Veen, Hans van; Koevoets, Iko Tamar; Reinen, Emilie; Voesenek, Laurentius A. C. J.; Pierik, R.L.M.

doi:10.1105/tpc.16.00790

Cited by 65 publications

(110 citation statements)

References 75 publications

(100 reference statements)

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“…Low R:FR ratio in densely planted sunflower fields leads to alternate stem inclinations, which is required for increased oil production per land area, thereby illustrating the adaptive value of neighbor detection in cropping systems (L opez Pereira et al, 2017). Low R:FR ratio also modulates the expression of jasmonic acid (JA)-mediated immunity genes in a species-specific manner (Gommers et al, 2017). JA signaling seems to be required for phytochrome B (i.e.…”

Section: Light Signal and Shade Avoidance Syndromementioning

confidence: 99%

The genetics underlying natural variation of plant–plant interactions, a beloved but forgotten member of the family of biotic interactions

et al. 2018

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Despite the importance of plant-plant interactions on crop yield and plant community dynamics, our understanding of the genetic and molecular bases underlying natural variation of plant-plant interactions is largely limited in comparison with other types of biotic interactions. By listing 63 quantitative trait loci (QTL) mapping and global gene expression studies based on plants directly challenged by other plants, we explored whether the genetic architecture and the function of the candidate genes underlying natural plant-plant interactions depend on the type of interactions between two plants (competition versus commensalism versus reciprocal helping versus asymmetry). The 16 transcriptomic studies are unevenly distributed between competitive interactions (n = 12) and asymmetric interactions (n = 4, all focusing on response to parasitic plants). By contrast, 17 and 30 QTL studies were identified for competitive interactions and asymmetric interactions (either weed suppressive ability or response to parasitic plants), respectively. Surprisingly, no studies have been carried out on the identification of genetic and molecular bases underlying natural variation in positive interactions. The candidate genes underlying natural plant-plant interactions can be classified into seven categories of plant function that have been identified in artificial environments simulating plant-plant interactions either frequently (photosynthesis, hormones), only recently (cell wall modification and degradation, defense pathways against pathogens) or rarely (ABC transporters, histone modification and meristem identity/life history traits). Finally, we introduce several avenues that need to be explored in the future to obtain a thorough understanding of the genetic and molecular bases underlying plant-plant interactions within the context of realistic community complexity.

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Section: Light Signal and Shade Avoidance Syndromementioning

confidence: 99%

The genetics underlying natural variation of plant–plant interactions, a beloved but forgotten member of the family of biotic interactions

et al. 2018

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“…The shade tolerance response (STR) has so far attracted less attention (Gommers et al 2013). Recently, a RNA sequencing comparative study between two Geranium species from different native light environments revealed that STR and SAS share a common phytochrome-mediated mechanism with contrasting patterns of gene expression for the control of immunity and shoot elongation (Gommers et al 2017). Genes involved in the SAS/STR in conifers remain unexplored, therefore we performed the whole-genome expression study using RNA sequencing (RNA-Seq) to get an overview of the biological pathways and molecular mechanisms that regulate SAS/STR and also to suggest potential candidates involved in the mechanism.…”

Section: Introductionmentioning

confidence: 99%

Transcriptome analysis of shade avoidance and shade tolerance in conifers

Ranade

Delhomme

García‐Gil

2019

Planta

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Main conclusion Gymnosperms respond differently to light intensity and R:FR; although some aspects of shade response appear conserved, yet underlying mechanisms seem to be diverse in gymnosperms as compared to angiosperms. Shade avoidance syndrome (SAS) is well-characterized in the shade intolerant model species Arabidopsis thaliana whereas much less is known about shade tolerance response (STR), yet regulation of SAS and STR with reference to conifers remains poorly understood. We conducted a comparative study of two conifer species with contrasting responses to shade, Scots pine (shade-intolerant) and Norway spruce (shade-tolerant), with the aim to understand mechanisms behind SAS and STR in conifers. Pine and spruce seedlings were grown under controlled light and shade conditions, and hypocotyl and seedling elongation following different light treatments were determined in both species as indicators of shade responses. Red to farred light ratio (R:FR) was shown to trigger the shade response in Norway spruce. In Scots pine, we observed an interaction between R:FR and light intensity. RNA sequencing (RNA-Seq) data revealed that SAS and STR responses included changes in expression of genes involved primarily in hormone signalling and pigment biosynthesis. From the RNA-Seq analysis, we propose that although some aspects of shade response appear to be conserved in angiosperms and gymnosperms, yet the underlying mechanisms may be different in gymnosperms that warrants further research.

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“…For example, a Begonia species living under a tropical canopy has specialized epidermal chloroplasts or iridoplasts whose physical properties enhance light harvesting and photosynthetic yield under low light conditions, especially in the green range of the spectrum [14]. Moreover, recent comparison of two closely related Geranium species highlight the contrasted growth and gene expression patterns as well as the opposite regulation of defense genes between shade tolerant versus avoiding species [15].…”

Section: Introductionmentioning

confidence: 99%

Plant Strategies for Enhancing Access to Sunlight

2017

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Light is a vital resource for plants, which compete for it particularly in dense communities. Plants have multiple photosensory receptors to detect the presence of competitors and thereby adjust their growth and developmental strategies accordingly. Broadly speaking, plants fall into two categories depending on their response to shading by leaves: shade tolerant or shade avoiding. Here, we describe the photoperception mechanisms and the growth responses elicited by the neighboring vegetation in shade-avoiding plants, focusing on Arabidopsis thaliana, where these responses are best understood. The type of response depends on plant density, ranging from neighbor detection modulating growth in anticipation of future shading to the response to canopy shade where light resources are limiting. These diverse environments are sensed by various photoreceptors, and we will describe our current understanding of signal integration triggered by distinct light cues in diverse light conditions.

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Molecular Profiles of Contrasting Shade Response Strategies in Wild Plants: Differential Control of Immunity and Shoot Elongation

Cited by 65 publications

References 75 publications

The genetics underlying natural variation of plant–plant interactions, a beloved but forgotten member of the family of biotic interactions

The genetics underlying natural variation of plant–plant interactions, a beloved but forgotten member of the family of biotic interactions

Transcriptome analysis of shade avoidance and shade tolerance in conifers

Plant Strategies for Enhancing Access to Sunlight

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