Expression of a plastid-localized sugar transporter in the suspensor is critical to embryogenesis

Zhang, Mengmeng; Xu, Xuwen; Zheng, Yueping; Zhang, Yan; Deng, Xiangxiong; Luo, Suan; Wu, Qiuping; Xu, Juan; Zhang, Shuqun

doi:10.1093/plphys/kiaa084

Cited by 10 publications

(5 citation statements)

References 45 publications

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“…It binds directly to the W‐box in the promoter of the GPT1 gene, which is highly expressed during pollen maturation and responsible for transporting glucose‐6‐phosphate into plastids for starch and/or fatty acid biosynthesis (Zheng et al, 2018). Recently, it has been reported that the suspensor expression of GPT1 is critical for embryogenesis (Zhang et al, 2021a). Whether it also acts downstream of MAPK in embryogenesis is worth exploring.…”

Section: Mapk Cascades In Plant Growth and Developmentmentioning

confidence: 99%

Mitogen‐activated protein kinase cascades in plant signaling

Zhang

2022

JIPB

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Mitogen-activated protein kinase (MAPK) cascades are key signaling modules downstream of receptors/sensors that perceive either endogenously produced stimuli such as peptide ligands and damage-associated molecular patterns (DAMPs) or exogenously originated stimuli such as pathogen/microbe-associated molecular patterns (P/MAMPs), pathogen-derived effectors, and environmental factors. In this review, we provide a historic view of plant MAPK research and summarize recent advances in the establishment of MAPK cascades as essential components in plant immunity, response to environmental stresses, and normal growth and development. Each tier of the MAPK cascades is encoded by a small gene family, and multi ple members can function redundantly in an MAPK cascade. Yet, they carry out a diverse array of biological functions in plants. How the signaling specificity is achieved has become an interesting topic of MAPK research. Future investigations into the molecular mechanism(s) underlying the regulation of MAPK activation including the activation kinetics and magnitude in response to a stimulus, the spatiotemporal expression patterns of all the components in the signaling pathway, and functional characterization of novel MAPK substrates are central to our understanding of MAPK functions and signaling specificity in plants.

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Section: Mapk Cascades In Plant Growth and Developmentmentioning

confidence: 99%

Mitogen‐activated protein kinase cascades in plant signaling

Zhang

2022

JIPB

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216

119

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“…To further understand the cellulose synthesis-related functions of MdFRK2 in stems, we heterologously expressed it in poplar ( Populus clone 717) under the expression of CaMV promoter. Poplar is rich in cellulose and is an important source material for everyday products such as cloth, paper and biofuels [ 25 ]. Analysis of the DNA and mRNA levels revealed that three heterologous lines (OE#1, OE#4 and OE#9) (Fig.…”

Section: Resultsmentioning

confidence: 99%

MdFRK2-mediated sugar metabolism accelerates cellulose accumulation in apple and poplar

Zhang

Zhu

et al. 2021

Biotechnol Biofuels

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Background Cellulose is not only a common component in vascular plants, but also has great economic benefits for paper, wood, and industrial products. In addition, its biosynthesis is highly regulated by carbohydrate metabolism and allocation in plant. MdFRK2, which encodes a key fructokinase (FRK) in apple, showed especially high affinity to fructose and regulated carbohydrate metabolism. Results It was observed that overexpression of MdFRK2 in apple decreased sucrose (Suc) and fructose (Fru) with augmented FRK activity in stems, and caused the alterations of many phenotypic traits that include increased cellulose content and an increase in thickness of the phloem region. To further investigate the involved mechanisms, we generated FRK2-OE poplar lines OE#1, OE#4 and OE#9 and discovered (1) that overexpression of MdFRK2 resulted in the huge increased cellulose level by shifting the fructose 6-phosphate or glucose 6-phsophate towards UDPG formation, (2) a direct metabolic pathway for the biosynthesis of cellulose is that increased cleavage of Suc into UDP-glucose (UDPG) for cellulose synthesis via the increased sucrose synthase (SUSY) activity and transcript levels of PtrSUSY1, (3) that the increased FRK activity increases the sink strength overall so there is more carbohydrate available to fuel increased cambial activity and that resulted in more secondary phloem. These results demonstrated that MdFRK2 overexpression would significantly changes the photosynthetic carbon flux from sucrose and hexose to UDPG for increased cellulose synthesis. Conclusions The present data indicated that MdFRK2 overexpression in apple and poplar changes the photosynthetic carbon flux from sucrose and hexose to UDPG for stem cellulose synthesis. A strategy is proposed to increase cellulose production by regulating sugar metabolism as a whole.

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“…Likewise, in cotton, Ghaoc2 and Gaco2-mutants plants fail to accumulate starch granules in pollen grains and result in male sterile plants (Khan et al, 2020(Khan et al, , 2022. In Arabidopsis, the gene AtGPT1's role was also found in reproduction, including the pollen development process (Zhang et al, 2020a;Zheng et al, 2018). Furthermore, Lin et al (2020) also found a low amount of starch accumulation in primordial differentiation stages of rice under HT stress conditions which lead to the reduction in the yield.…”

Section: Ht Disrupts Sugar Metabolism During Anther Developmentmentioning

confidence: 99%

“…Likewise, in cotton, Ghaoc2 and Gaco2‐ mutants plants fail to accumulate starch granules in pollen grains and result in male sterile plants (Khan et al ., 2020, 2022). In Arabidopsis , the gene AtGPT1's role was also found in reproduction, including the pollen development process (Zhang et al ., 2020a; Zheng et al ., 2018). Furthermore, Lin et al .…”

Section: Ht Disrupts Sugar Metabolism During Anther Developmentmentioning

confidence: 99%

High‐temperature stress in crops: male sterility, yield loss and potential remedy approaches

Khan

Ling

et al. 2022

Plant Biotechnology Journal

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Summary Global food security is one of the utmost essential challenges in the 21st century in providing enough food for the growing population while coping with the already stressed environment. High temperature (HT) is one of the main factors affecting plant growth, development and reproduction and causes male sterility in plants. In male reproductive tissues, metabolic changes induced by HT involve carbohydrates, lipids, hormones, epigenetics and reactive oxygen species, leading to male sterility and ultimately reducing yield. Understanding the mechanism and genes involved in these pathways during the HT stress response will provide a new path to improve crops by using molecular breeding and biotechnological approaches. Moreover, this review provides insight into male sterility and integrates this with suggested strategies to enhance crop tolerance under HT stress conditions at the reproductive stage.

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Expression of a plastid-localized sugar transporter in the suspensor is critical to embryogenesis

Cited by 10 publications

References 45 publications

Mitogen‐activated protein kinase cascades in plant signaling

Mitogen‐activated protein kinase cascades in plant signaling

MdFRK2-mediated sugar metabolism accelerates cellulose accumulation in apple and poplar

High‐temperature stress in crops: male sterility, yield loss and potential remedy approaches

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