Transcription Factors and Hormone‐Mediated Mechanisms Regulate Stomata Development and Responses Under Abiotic Stresses: An Overview

Landi, Marco; Basile, Alice; Fambrini, Marco; Pugliesi, Claudio

doi:10.1002/9781118889022.ch27

Cited by 2 publications

(4 citation statements)

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“…In addition, continuous light exposure force plants to deal with energy absorption through photosynthetic pigments by changing the dynamic dissipation of photosynthetic energy and increasing Chl a fluorescence emission as evidenced in common bean plants subjected to 1 day of root flooding. The decline in water transport by plants under root flooding has been associated with the acidification of the cytosol (Aroca et al 2012), which inhibits the activity of aquaporins (limiting water absorption) (Landi et al 2017). Moreover, the extent negative effects limits the recovery of gas exchange even when soil moisture reaches the levels of control plants (7 days of recovery), which can be a result of the low capacity of the soil to rapid decline the moisture over the time, maintaining plants under waterlogging conditions for an extended period, increasing cellular damages.…”

Section: Discussionmentioning

confidence: 99%

Short-term root flooding and recovery conditions—affected photosynthetic process of common bean plants

Posso

Borella

Reissig

et al. 2020

Theor. Exp. Plant Physiol.

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Photosynthetic process of common bean plants (Phaseolus vulgaris L.) was evaluated from short-term root flooding and recovery conditions. Common bean plants (BRS Expedito genotype) were grown in single plastic pots (1 L), containing soil as substrate. At the early reproductive stage (R1), distilled water was added up to 20 mm above the soil surface to flood the root system of plants for 1 day. The flooding was maintained by fitting a second pot without holes. After 1 day of flooding, the pots without holes were removed to drain water and recover the plants. Control plants were kept under normoxia. Chlorophyll a fluorescence transient, gas exchange, glycolate oxidase, antioxidative enzymes, reactive oxygen species (ROS) and lipid peroxidation were measured in leaves upon flooding (1 day) and recovery (1, 3 and 7 days) conditions. Root flooding (1 day) induced decrease (two-fold) in CO 2 assimilation rate and did not recover even after 7 days of normoxic conditions was re-established, besides limited transpiration rate and decreases in stomatal conductance. Moreover, the continuous light energy absorption by chlorophylls induced an increase in fluorescence and heat and impaired the connectivity between photosystems I and II, leading to ROS formation. The antioxidative enzyme system induced upon flooding and recovery conditions did not deal efficiently with ROS, which led to oxidative damage (lipid peroxidation) in leaves of common bean. Therefore, short-term root flooding impairs photosynthetic process recovery of common bean plants upon re-establishment of normoxic conditions. Keywords Antioxidative enzymes Á Oxidative damage Á Phaseolus vulgaris L. Á Photosynthesis Á Waterlogging 1 Introduction Climate changes are increasing flooding events since the 1950 0 s worldwide (Bailey-Serres et al. 2012; Limami et al. 2014; Pedersen et al. 2017), especially in the 28 million hectares of flood-prone located in Cerrado and lowlands in the South of Brazil (Jackson and Colmer 2005), due to increases in heavy rainfall (IPCC 2014). Currently, the lowland areas are mainly occupied with rice cropping system (Garcia et al. 2020), and food production by small farmers, such as common bean (Phaseolus vulgaris L.). Common bean

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Section: Discussionmentioning

confidence: 99%

Short-term root flooding and recovery conditions—affected photosynthetic process of common bean plants

Posso

Borella

Reissig

et al. 2020

Theor. Exp. Plant Physiol.

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“…This requires a mechanism able to regulate the spatial arrangement of the hairs on the leaf surface [8,37]. A similar event is common in the stomata development [6].…”

Section: Genes Involved In the Initiation And Growth Of Trichomes mentioning

confidence: 99%

“…In epidermal cells, the TOO MANY MOUTH ( TMM ) gene was initially implicated in the control of stomata distribution and patterning [6]. However, in Arabidopsis plants over-expressing TMM, the trichome density on leaves is significantly reduced, and most of the trichomes display abnormal ramifications [99].…”

Section: Genes Involved In the Initiation And Growth Of Trichomes mentioning

confidence: 99%

“…The epidermis is the superficial coating layer that wraps leaves and the primary body of the stem and it is in direct contact with the atmosphere, and is therefore a protective barrier against abiotic and biotic factors. The epidermis is not a homogeneous tissue: it is made up of epidermal cells and by annexed (or specialized) cells, such as stomata and trichomes or hairs [1,2,3,4,5,6,7].…”

Section: Introductionmentioning

confidence: 99%

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The Dynamic Genetic-Hormonal Regulatory Network Controlling the Trichome Development in Leaves

Fambrini

Pugliesi

2019

Plants

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Plant trichomes are outgrowths developed from an epidermal pavement cells of leaves and other organs. Trichomes (also called ‘hairs’) play well-recognized roles in defense against insect herbivores, forming a physical barrier that obstructs insect movement and mediating chemical defenses. In addition, trichomes can act as a mechanosensory switch, transducing mechanical stimuli (e.g., insect movement) into physiological signals, helping the plant to respond to insect attacks. Hairs can also modulate plant responses to abiotic stresses, such as water loss, an excess of light and temperature, and reflect light to protect plants against UV radiation. The structure of trichomes is species-specific and this trait is generally related to their function. These outgrowths are easily analyzed and their origin represents an outstanding subject to study epidermal cell fate and patterning in plant organs. In leaves, the developmental control of the trichomatous complement has highlighted a regulatory network based on four fundamental elements: (i) genes that activate and/or modify the normal cell cycle of epidermal pavement cells (i.e., endoreduplication cycles); (ii) transcription factors that create an activator/repressor complex with a central role in determining cell fate, initiation, and differentiation of an epidermal cell in trichomes; (iii) evidence that underlines the interplay of the aforesaid complex with different classes of phytohormones; (iv) epigenetic mechanisms involved in trichome development. Here, we reviewed the role of genes in the development of trichomes, as well as the interaction between genes and hormones. Furthermore, we reported basic studies about the regulation of the cell cycle and the complexity of trichomes. Finally, this review focused on the epigenetic factors involved in the initiation and development of hairs, mainly on leaves.

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Transcription Factors and Hormone‐Mediated Mechanisms Regulate Stomata Development and Responses Under Abiotic Stresses: An Overview

Cited by 2 publications

References 312 publications

Short-term root flooding and recovery conditions—affected photosynthetic process of common bean plants

Short-term root flooding and recovery conditions—affected photosynthetic process of common bean plants

The Dynamic Genetic-Hormonal Regulatory Network Controlling the Trichome Development in Leaves

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