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学者姓名：廖德华
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Abstract ：
Vegetables are an important food and many of them can form AM (arbuscular mycorrhiza) symbiosis with AMF (AM fungi) that belongs to the sub-phylum Glomeromycota. The symbiosis with AM in vegetables enhances their tolerance to various stresses, such as low Pi (phosphate), salinity and soil-borne diseases. In the past decades, the molecular mechanism of AM symbiosis in vegetables has begun to emerge. Here, we review the key studies characterizing the molecular mechanism of AM symbiosis and highlights the huge potential of AMF in vegetable cultivation.
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| GB/T 7714 | Liao, Dehua , Sun, Chao , Li, Shuang et al. The utilization and molecular mechanism of arbuscular mycorrhizal symbiosis in vegetables [J]. | VEGETABLE RESEARCH , 2023 , 3 . |
| MLA | Liao, Dehua et al. "The utilization and molecular mechanism of arbuscular mycorrhizal symbiosis in vegetables" . | VEGETABLE RESEARCH 3 (2023) . |
| APA | Liao, Dehua , Sun, Chao , Li, Shuang , Tauqeer, Arfa , Bian, Xinxin , Shen, Jingyuan et al. The utilization and molecular mechanism of arbuscular mycorrhizal symbiosis in vegetables . | VEGETABLE RESEARCH , 2023 , 3 . |
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Forming mutualistic symbioses with arbuscular mycorrhizae (AMs) improves the acquisition of mineral nutrients for most terrestrial plants. However, the formation of AM symbiosis usually occurs under phosphate (Pi)-deficient conditions. Here, we identify SlSPX1 (SYG1 (suppressor of yeast GPA1)/Pho81(phosphate 81)/XPR1 (xenotropic and polytropic retrovirus receptor 1) as the major repressor of the AM symbiosis in tomato (Solanum lycopersicum) under phosphate-replete conditions. Loss of SlSPX1 function promotes direct Pi uptake and enhances AM colonization under phosphate-replete conditions. We determine that SlSPX1 integrates Pi signaling and AM symbiosis by directly interacting with a set of arbuscule-induced SlPHR proteins (SlPHR1, SlPHR4, SlPHR10, SlPHR11, and SlPHR12). The association with SlSPX1 represses the ability of SlPHR proteins to activate AM marker genes required for the arbuscular mycorrhizal symbiosis. SlPHR proteins exhibit functional redundancy, and no defective AM symbiosis was detected in the single mutant of SlPHR proteins. However, silencing SlPHR4 in the Slphr1 mutant background led to reduced AM colonization. Therefore, our results support the conclusion that SlSPX1-SlPHRs form a Pi-sensing module to coordinate the AM symbiosis under different Pi-availability conditions. SlSPX proteins suppress SlPHR activity to inhibit arbuscular mycorrhizal symbiosis in tomato under phosphate-replete conditions.
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| GB/T 7714 | Liao, Dehua , Sun, Chao , Liang, Haiyan et al. SlSPX1-SlPHR complexes mediate the suppression of arbuscular mycorrhizal symbiosis by phosphate repletion in tomato [J]. | PLANT CELL , 2022 , 34 (10) : 4045-4065 . |
| MLA | Liao, Dehua et al. "SlSPX1-SlPHR complexes mediate the suppression of arbuscular mycorrhizal symbiosis by phosphate repletion in tomato" . | PLANT CELL 34 . 10 (2022) : 4045-4065 . |
| APA | Liao, Dehua , Sun, Chao , Liang, Haiyan , Wang, Yang , Bian, Xinxin , Dong, Chaoqun et al. SlSPX1-SlPHR complexes mediate the suppression of arbuscular mycorrhizal symbiosis by phosphate repletion in tomato . | PLANT CELL , 2022 , 34 (10) , 4045-4065 . |
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Arsenic (As) is toxic and ubiquitous in the environment, posing a growing threat to human health. As-hyperaccumulator Pteris vittata has been used for phytoremediation of As-contaminated soil. Symbiosis with arbuscular mycorrhizal fungi (AMF) enhances As accumulation by P. vittata, which is different from As inhibition in typical plants. In this study, P. vittata seedlings inoculated with or without AMF were cultivated in As-contaminated soils for 2 months. AMF-root symbiosis enhanced plant growth, with 64.5% greater As contents in the fronds. After exposure to AsV for 2 h, the arsenate (AsV) and arsenite (AsIII) contents in AMF-roots increased by 1.8-and 3.6-fold, suggesting more efficient As uptake by P. vittata with AMF-roots. Plants take up and transport AsV via phosphate transporters (Phts). Here, for the first time, we identified a novel mycorrhiza-specific Pht transporter, PvPht1;6, from P. vittata. The transcripts of PvPht1;6 were strongly induced in AMF-roots, which were localized to the plasma membrane of arbuscule-containing cells. By complementing a yeast mutant lacking 5-Phts, we confirmed PvPht1;6 ' s transport activity for both P and AsV. In contrast to typical AMF-inducible phosphate transporter LePT4 from tomato, PvPht1;6 showed greater AsV transport capacity. The results suggest that PvPht1;6 is probably critical for AsV transport at the periarbuscular membrane of P. vittata root cells, revealing the underlying mechanism of efficient As accumulation in P. vittata with AMF-roots.
Keyword ：
6 6 AMF symbiosis AMF symbiosis arsenate arsenate periarbuscular membrane periarbuscular membrane phosphate transporter PvPht1 phosphate transporter PvPht1 phosphate transporters phosphate transporters phytoremediation phytoremediation
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| GB/T 7714 | Sun, Dan , Zhang, Xiang , Liao, Dehua et al. Novel Mycorrhiza-Specific P Transporter PvPht1;6 Contributes to As Accumulation at the Symbiotic Interface of As-Hyperaccumulator Pteris vittata [J]. | ENVIRONMENTAL SCIENCE & TECHNOLOGY , 2022 , 56 (19) : 14178-14187 . |
| MLA | Sun, Dan et al. "Novel Mycorrhiza-Specific P Transporter PvPht1;6 Contributes to As Accumulation at the Symbiotic Interface of As-Hyperaccumulator Pteris vittata" . | ENVIRONMENTAL SCIENCE & TECHNOLOGY 56 . 19 (2022) : 14178-14187 . |
| APA | Sun, Dan , Zhang, Xiang , Liao, Dehua , Yan, Shuang , Feng, Huayuan , Tang, Yetao et al. Novel Mycorrhiza-Specific P Transporter PvPht1;6 Contributes to As Accumulation at the Symbiotic Interface of As-Hyperaccumulator Pteris vittata . | ENVIRONMENTAL SCIENCE & TECHNOLOGY , 2022 , 56 (19) , 14178-14187 . |
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【目的】近几十年来,PHR和SPX蛋白作为磷信号途径中的核心调控蛋白已经得到了广泛的研究。并且随着研究的不断深入,人们发现它们在其它养分信号途径中也起着重要作用。为此,本文综述PHR与SPX蛋白在植物根系发育,养分吸收、转运与再分配中的研究进展,从而更加全面地理解SPX-PHR模块在其中的作用。【主要进展】植物PHR转录因子可以通过结合靶基因启动子的P1BS元件从而调控下游基因的转录,进而参与植物根系发育,养分吸收、转运、分配以及免疫应答。植物PHR转录因子自身在转录水平受到多种信号的调控,如生长素信号途径ARF7/19、乙烯信号途径EIN3、光信号途径FHY3、FAR1能够在转录水平上诱导PHR表达;而光信号途径中的HY5以及光敏色素因子PIF4/5则抑制PHR或其同源基因PHL的表达。进一步研究发现,SPX蛋白能够与PHR互作并抑制其转录激活能力。而SPX在转录水平和蛋白水平也受到氮、磷信号的调控。氮信号途径中NRT1.1(B)-NBIP1和磷信号途径中SDELs均能介导26S蛋白酶复合体途径降解SPX蛋白,进而释放NLP/PHR进入细胞核,激活硝酸盐和磷酸盐应答基因的表达。同时NLP/PHR进入细胞核后,还可转录激活NIGT1的表达,进一步调控硝酸盐和磷酸盐应答基因的表达。【研究展望】未来我们需要对PHR转录因子的上游调控信号进行更全面的鉴定以及展开对SPX互作蛋白的鉴定与功能研究,以期更全面的理解SPX-PHR模块在植物养分吸收中的作用机制。
Keyword ：
PHR PHR SPX SPX 营养 营养 调控 调控
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| GB/T 7714 | 孙超 , 廖德华 , 吴双 . 植物SPX-PHR模块在营养信号途径中的作用研究进展 [J]. | 植物营养与肥料学报 , 2021 , 27 (06) : 1080-1090 . |
| MLA | 孙超 et al. "植物SPX-PHR模块在营养信号途径中的作用研究进展" . | 植物营养与肥料学报 27 . 06 (2021) : 1080-1090 . |
| APA | 孙超 , 廖德华 , 吴双 . 植物SPX-PHR模块在营养信号途径中的作用研究进展 . | 植物营养与肥料学报 , 2021 , 27 (06) , 1080-1090 . |
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Arbuscular mycorrhiza (AM) is a widespread symbiotic relationship between plants and fungi (Glomeromycota), which improves the supply of water and nutrients to host plants. AM symbiosis is set in motion by fungal chitooligosaccharides and lipochitooligosaccharides, which are perceived by plant-specific LysM-type receptor kinases (LYK). In rice this involves OsCERK1, a LYK also essential for chitin triggered innate immunity. In contrast in legumes, the CERK1 homologous gene experienced duplication events resulting in subfunctionalization. However, it remains unknown whether this subfunctionalization is legume-specific, or has occurred also in other dicot plant species. We identified four CERK1 homologs in tomato (SlLYK1, SlLYK11, SlLYK12, and SlLYK13) and investigated their roles in chitin signaling and AM symbiosis. We found that knockdown of SlLYK12 in tomato significantly reduced AM colonization, whereas chitin-induced responses were unaffected. In contrast, knockdown of SlLYK1 resulted in reduced responses to chitin, but did not alter responses to AM fungi. Moreover, ectopic overexpression of SlLYK1 and SlLYK13 in Nicotiana benthamiana induced cell death, whereas SlLYK12 overexpression did not. Based on our results and comparison with rice OsCERK1, we hypothesize that OsCERK1 orthologs in tomato underwent gene duplication, leading to the subfunctionalization of immunity and symbiosis.
Keyword ：
arbuscular mycorrhiza (AM) symbiosis arbuscular mycorrhiza (AM) symbiosis chitin chitin chitin elicitor receptor kinase (CERK1) chitin elicitor receptor kinase (CERK1) innate immunity innate immunity LysM receptor-like kinase (LYK) LysM receptor-like kinase (LYK) SlLYK1 SlLYK1 SlLYK12 SlLYK12 Solanum lycopersicum Solanum lycopersicum
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| GB/T 7714 | Liao, Dehua , Sun, Xun , Wang, Ning et al. Tomato LysM Receptor-Like Kinase SlLYK12 Is Involved in Arbuscular Mycorrhizal Symbiosis [J]. | FRONTIERS IN PLANT SCIENCE , 2018 , 9 . |
| MLA | Liao, Dehua et al. "Tomato LysM Receptor-Like Kinase SlLYK12 Is Involved in Arbuscular Mycorrhizal Symbiosis" . | FRONTIERS IN PLANT SCIENCE 9 (2018) . |
| APA | Liao, Dehua , Sun, Xun , Wang, Ning , Song, Fengming , Liang, Yan . Tomato LysM Receptor-Like Kinase SlLYK12 Is Involved in Arbuscular Mycorrhizal Symbiosis . | FRONTIERS IN PLANT SCIENCE , 2018 , 9 . |
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Most terrestrial plants are able to form a root symbiosis with arbuscular mycorrhizal (AM) fungi for enhancing the assimilation of mineral nutrients. AM fungi are obligate symbionts that depend on host plants as their sole carbon source. Development of an AM association requires a continuous signal exchange between the two symbionts, which triggers coordinated differentiation of both partners, to enable their interaction within the root cells. The control of the AM symbiosis involves a finely-tuned process, and an increasing number of studies have pointed to a pivotal role of several phytohormones, such as strigolactones (SLs), gibberellic acids (GAs), and auxin, in the modulation of AM symbiosis, through the early recognition of events up to the final arbuscular formation. SLs are involved in the presymbiotic growth of the fungus, while auxin is required for both the early steps of fungal growth and the differentiation of arbuscules. GAs modulate arbuscule formation in a dose-dependent manner, via DELLA proteins, a group of GRAS transcription factors that negatively control the GA signaling. Here, we summarize the recent findings on the roles of these plant hormones in AM symbiosis, and also explore the current understanding of how the DELLA proteins act as central regulators to coordinate plant hormone signaling, to regulate the AM symbiosis.
Keyword ：
arbuscular mycorrhizal symbiosis arbuscular mycorrhizal symbiosis DELLA DELLA phytohormone phytohormone signaling signaling
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| GB/T 7714 | Liao, Dehua , Wang, Shuangshuang , Cui, Miaomiao et al. Phytohormones Regulate the Development of Arbuscular Mycorrhizal Symbiosis [J]. | INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES , 2018 , 19 (10) . |
| MLA | Liao, Dehua et al. "Phytohormones Regulate the Development of Arbuscular Mycorrhizal Symbiosis" . | INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES 19 . 10 (2018) . |
| APA | Liao, Dehua , Wang, Shuangshuang , Cui, Miaomiao , Liu, Jinhui , Chen, Aiqun , Xu, Guohua . Phytohormones Regulate the Development of Arbuscular Mycorrhizal Symbiosis . | INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES , 2018 , 19 (10) . |
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