The mechanism of PGPR regulating plant response to abiotic stress

doi:10.11686/cyxb2023276

Abstract

Abstract:

Salt alkali， drought and other abiotic stresses are important environmental factors that limit plant growth and yield. Plant growth promoting rhizobacteria （PGPR）， as beneficial microorganisms colonizing plant roots， have been shown to have a capacity for use as biological agents， thereby harnessing their functions for human benefit. This methodology has advantages compared to traditional agricultural chemicals， including low cost， high efficiency， and environmental protection. PGPR have been documented to not only promote plant growth and crop yield， but also to significantly improve the tolerance of plants to abiotic stress. In this study， the definition and types of PGPR， their biological functions and their role in plant response to abiotic stress such as salinity， drought， high and low temperature， and heavy metals were reviewed， and future research directions were also explored. The results from this study provide a foundation for further research on PGPR mediated plant stress resistance and the development and application of these biological agents.

Key words: plant growth promoting rhizobacteria, nitrogen-fixing bacteria, phosphate-solubilizing bacteria, phytohormone, abiotic stress, stress resistance

Guo-qiang WU, Zu-long YU, Ming WEI. The mechanism of PGPR regulating plant response to abiotic stress[J]. Acta Prataculturae Sinica, 2024, 33(6): 203-218.

Figures/Tables 3

References 125

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属 Genus	种 Species	功能 Function	参考文献 References
芽孢杆菌属Bacillus	枯草芽孢杆菌B. subtilis	诱导植物抗性，调节植物激素。Induce plant resistance， and regulate plant hormone.	［19］
假单胞菌属Pseudomonas	固氮假单胞菌Pseudomonas azotoformans	产胞外多糖、吲哚乙酸和可溶性磷酸三钙。Production of extracellular polysaccharides， indoleacetic acid and soluble tricalcium phosphate.	［20］
固氮螺旋菌属Azospirillum	巴西固氮螺菌Azospirillum brasilense	固氮，产铁载体、胞外多糖、ACC脱氨酶、吲哚乙酸和水解酶。Nitrogen fixation， production of iron carrier， extracellular polysaccharide， ACC deaminase， indoleacetic acid and hydrolase.	［21］
固氮菌属Azotobacter	贝氏固氮菌Azotobacter beijerinckii	固氮，改良土壤，产生长素。Nitrogen fixation， soil improvement， and production of auxin.	［22］
克雷伯菌属Klebsiella	肺炎克雷伯菌Klebsiella pneumoniae	固氮，产氨、铁载体和吲哚乙酸。Nitrogen fixation， production of ammonia， iron carrier and indole acetic acid.	［23］
肠杆菌属Enterobacter	气肠杆菌Enterobacter aerogenes	固氮、溶磷，产生长素、ACC脱氨酶和铁载体。Nitrogen fixation， phosphorus dissolution， production of auxin， ACC deaminase， and iron carrier.	［24］
节杆菌属Arthrobacter	滋养节杆菌Arthrobacter pascens	合成吲哚乙酸。Synthesis of indole acetic acid.	［25］
伯克霍尔德氏菌属Burkhoolderia	越南伯克霍尔德菌Burkholderia vietnamiensis	固氮。Nitrogen fixation.	［26］
类芽孢杆菌属Paenibacillus	胶质类芽孢杆菌Paenibacillus mucilaginosus	形成生物膜、溶磷和产生长素。Forming biofilm， phosphorus dissolution and production of auxin.	［27］
沙雷氏菌属Serratia	格氏沙雷氏菌Serratia grimesii	固氮、溶磷、产铁载体和生长素。Nitrogen fixation， phosphorus dissolution， production of iron carrier and auxin.	［17］
无色杆菌属Achromobacter	木糖无色杆菌Achromobacter xylosoxidans	产ACC脱氨酶。Production of ACC deaminase.	［28］
根瘤菌属Rhizobia	阿拉米根瘤菌Rhizobium alamii	产胞外多糖。Production of extracellular polysaccharide.	［29］
不动杆菌属Acinetobacter	约氏不动杆菌Acinetobacter johnsonii	调节土壤酶活性，改善土壤。Regulating soil enzyme activity and improving soil quality.	［30］
产碱杆菌属Alcaligenes	粪产碱杆菌Alcaligenes faecalis	产生长素，溶磷，改善营养吸收。Production of auxin， phosphorus dissolution， and improve nutrient absorption.	［31］
链霉菌属Streptomyces	微黄链霉菌Streptomyces microflavus	提高养分吸收。Improve nutrient absorption.	［32］
气单胞菌属Aeromonas	豚鼠气单胞菌Aeromonas caviae	改良土壤，促进营养吸收。Improve soil and promote nutrient absorption.	［33］
泛菌属Pantoea	成团泛菌Pantoea agglomerans	固氮、溶磷、产生长素。Nitrogen fixation， phosphorus dissolution， and production of auxin.	［34］
微球菌属Micrococcus	云南微球菌Micrococcus yunnanensis	提高营养元素的吸收。Improve the absorption of nutrients.	［35］

属 Genus	种 Species	功能 Function	参考文献 References
芽孢杆菌属Bacillus	枯草芽孢杆菌B. subtilis	诱导植物抗性，调节植物激素。Induce plant resistance， and regulate plant hormone.	［19］
假单胞菌属Pseudomonas	固氮假单胞菌Pseudomonas azotoformans	产胞外多糖、吲哚乙酸和可溶性磷酸三钙。Production of extracellular polysaccharides， indoleacetic acid and soluble tricalcium phosphate.	［20］
固氮螺旋菌属Azospirillum	巴西固氮螺菌Azospirillum brasilense	固氮，产铁载体、胞外多糖、ACC脱氨酶、吲哚乙酸和水解酶。Nitrogen fixation， production of iron carrier， extracellular polysaccharide， ACC deaminase， indoleacetic acid and hydrolase.	［21］
固氮菌属Azotobacter	贝氏固氮菌Azotobacter beijerinckii	固氮，改良土壤，产生长素。Nitrogen fixation， soil improvement， and production of auxin.	［22］
克雷伯菌属Klebsiella	肺炎克雷伯菌Klebsiella pneumoniae	固氮，产氨、铁载体和吲哚乙酸。Nitrogen fixation， production of ammonia， iron carrier and indole acetic acid.	［23］
肠杆菌属Enterobacter	气肠杆菌Enterobacter aerogenes	固氮、溶磷，产生长素、ACC脱氨酶和铁载体。Nitrogen fixation， phosphorus dissolution， production of auxin， ACC deaminase， and iron carrier.	［24］
节杆菌属Arthrobacter	滋养节杆菌Arthrobacter pascens	合成吲哚乙酸。Synthesis of indole acetic acid.	［25］
伯克霍尔德氏菌属Burkhoolderia	越南伯克霍尔德菌Burkholderia vietnamiensis	固氮。Nitrogen fixation.	［26］
类芽孢杆菌属Paenibacillus	胶质类芽孢杆菌Paenibacillus mucilaginosus	形成生物膜、溶磷和产生长素。Forming biofilm， phosphorus dissolution and production of auxin.	［27］
沙雷氏菌属Serratia	格氏沙雷氏菌Serratia grimesii	固氮、溶磷、产铁载体和生长素。Nitrogen fixation， phosphorus dissolution， production of iron carrier and auxin.	［17］
无色杆菌属Achromobacter	木糖无色杆菌Achromobacter xylosoxidans	产ACC脱氨酶。Production of ACC deaminase.	［28］
根瘤菌属Rhizobia	阿拉米根瘤菌Rhizobium alamii	产胞外多糖。Production of extracellular polysaccharide.	［29］
不动杆菌属Acinetobacter	约氏不动杆菌Acinetobacter johnsonii	调节土壤酶活性，改善土壤。Regulating soil enzyme activity and improving soil quality.	［30］
产碱杆菌属Alcaligenes	粪产碱杆菌Alcaligenes faecalis	产生长素，溶磷，改善营养吸收。Production of auxin， phosphorus dissolution， and improve nutrient absorption.	［31］
链霉菌属Streptomyces	微黄链霉菌Streptomyces microflavus	提高养分吸收。Improve nutrient absorption.	［32］
气单胞菌属Aeromonas	豚鼠气单胞菌Aeromonas caviae	改良土壤，促进营养吸收。Improve soil and promote nutrient absorption.	［33］
泛菌属Pantoea	成团泛菌Pantoea agglomerans	固氮、溶磷、产生长素。Nitrogen fixation， phosphorus dissolution， and production of auxin.	［34］
微球菌属Micrococcus	云南微球菌Micrococcus yunnanensis	提高营养元素的吸收。Improve the absorption of nutrients.	［35］

非生物胁迫 Abiotic stress	植物根际促生菌 PGPR	植物种类 Plant species	PGPR机制 PGPR mechanism	作用效果 Action effect	参考文献References
盐胁迫 Salt stress	巴西固氮螺菌Azospirillum brasiliense 褐球固氮菌Azotobacter chococcum	香菜Coriandrum sativum	调节抗氧化酶活性。Regulating antioxidant enzyme activity.	生物量增加，产量提高。Increase in biomass and yield.	［100］
	约氏不动杆菌A. johnsonii	玉米Z. mays	调节土壤酶活性。Regulating soil enzyme activity.	改良了土壤健康，养分吸收增加。Improved soil health and increased nutrient absorption.	［30］
	特基拉芽孢杆菌B. tequilensis 阿氏芽孢杆菌B. aryabhattai	水稻O. sativa	维持渗透平衡。Maintain osmotic balance.	改善了生化特性和养分吸收。Improved biochemical characteristics and nutrient absorption.	［97］
	甲基营养芽孢杆菌Bacillus methyllotrophicus	小麦T. aestivum	产IAA、ACC脱氨酶和胞外多糖。Production of IAA， ACC deaminase and extracellular polysaccharides （EPS）.	发芽率、根冠长、光合色素等均有显著增加。Significant increases in germination rate， root cap length， photosynthetic pigments， etc.	［101］
	巨大芽孢杆菌B. megaterium	小麦T. aestivum	产生IAA。Production of IAA.	发芽率、根冠长等生长参数均有显著提高。The growth parameters such as germination rate and root cap length have significantly improved.	［102］
干旱胁迫 Drought stress	贝莱斯芽孢杆菌Bacillus velezensis 解淀粉芽孢杆菌B. amyloliquefaciens	胡桃Juglans regia	产铁载体、氰化氢和IAA。Production of iron carrier， hydrogen cyanide and IAA.	改善了抗逆机制。Improved stress resistance mechanism.	［103］
	枯草芽孢杆菌B. subtilis	番茄S. lycopersicum	产ACC脱氨酶，降低乙烯水平。Production of ACC deaminase and reduce ethylene （ET） levels.	脯氨酸含量升高，MDA和H₂O₂含量降低。Proline content increases， MDA and H₂O₂ content decreases.	［104］
	恶臭假单胞菌Pseudomonas putida	玉米Z. mays	调节代谢、信号和应激反应基因。Regulating metabolism， signal and stress response gene.	超氧化物歧化酶、过氧化氢酶和ET表达均降低。The expression of superoxide dismutase， catalase and ET were reduced.	［105］
	固氮假单胞菌P. azotoformans	小麦T. aestivum	产生EPS、IAA和可溶性磷酸三钙。Production of EPS， IAA， and soluble tricalcium phosphate.	生长性状、光合色素效率等生理指标均有显著提高。Physiological indicators such as growth traits and photosynthetic pigment efficiency have significantly improved.	［20］
	阿拉米根瘤菌R. alamii	油菜B. chinensis	产EPS。Production of EPS.	茎部生物量增加。Increased stem biomass.	［29］
	荧光假单胞菌P. fluorescens 解淀粉芽孢杆菌B. amyloliquefaciens	薄荷Mentha hyplocalyx	调节酶活性。Regulating enzyme activity.	酶活性和总酚含量显著提高。Significant increase in enzyme activity and total phenolic content.	［106］
温度胁迫 Temperature stress	芥菜假单胞菌 Pseudomonas brassicacearum	小麦 T. aestivum	产生高分子量的耐热蛋白，调节植物抗氧化酶活性。Production of high molecular weight heat-resistant proteins to regulate plant antioxidant enzyme activity.	幼苗鲜重、抗氧化酶活性、脯氨酸和蛋白质含量显著提高。Significant increase in seedling fresh weight， antioxidant enzyme activity， proline and protein content.	［107］
	特基拉芽孢杆菌 B. tequilensis	大豆 G. max	产IAA、ABA。Production of IAA and ABA.	植株茎长、生物量和光合色素含量显著提高。Significant increase in plant stem length， biomass， and photosynthetic pigment content.	［80］
	梭形芽孢杆菌Bacillusfusiformis 球形芽孢杆菌Bacillus sphaericus	玉米 Z. mays	溶磷，产生葡萄糖酸、植物激素、儿茶酚和铁载体。Dissolve phosphorus and production of gluconic acid， phytohormone， catechol and iron carrier.	渗透酶、酚类物质、植物激素和抗氧化酶均上调。Permeases， phenols， plant hormone and antioxidant enzymes were up-regulated.	［108］
	哈茨木霉菌Trichoderma harzianum 木糖无色杆菌Achromobacter xylosoxidans	圣罗勒 Ocimum sanctum	产ACC脱氨酶。Production of ACC deaminase.	营养吸收、光合作用、淀粉和脯氨酸积累增加，产量提高。Increased nutrient absorption， photosynthesis， starch and proline accumulation， resulting in increased yield.	［28］
重金属胁迫 Heavy metal stress	气肠杆菌E. aerogenes	水稻 O. sativa	产生IAA、固氮、溶磷。Production of IAA， nitrogen fixation， and dissolved phosphorus.	光合作用增强。Enhanced photosynthesis.	［109］
	胶质类芽孢杆菌 Paenibacillus mucilaginosus 中华根瘤菌Sinorhizobium meliloti	紫花苜蓿 M. sativa	降低MDA和ROS的积累。Reduce the accumulation of MDA and ROS.	提高植株的抗氧化能力，显著降低了氧化损伤。Improve the antioxidant capacity of plants and significantly reduce oxidative damage.	［110］
	不动杆菌Acinetobacter beijerinckii 植生拉乌尔菌Raoultella planticola	大豆 G.max	产IAA、水杨酸和代谢物。Production of IAA， salicylic acid （SA）， and metabolites.	代谢物上调，氧化损伤减少。Upregulation of metabolites and reduction of oxidative damage.	［111］
	荧光假单胞菌P. fluorescens 假单胞菌Pseudomonas	向日葵 Helianthus annuus	产生长素、铁载体、ACC脱氨酶，溶磷。Production of auxin， iron carrier， ACC deaminase， and dissolve phosphorus.	茎高和茎粗、叶绿素指数及生物量增加。Increase in stem height and stem diameter， chlorophyll index， and biomass.	［112］

非生物胁迫 Abiotic stress	植物根际促生菌 PGPR	植物种类 Plant species	PGPR机制 PGPR mechanism	作用效果 Action effect	参考文献References
盐胁迫 Salt stress	巴西固氮螺菌Azospirillum brasiliense 褐球固氮菌Azotobacter chococcum	香菜Coriandrum sativum	调节抗氧化酶活性。Regulating antioxidant enzyme activity.	生物量增加，产量提高。Increase in biomass and yield.	［100］
	约氏不动杆菌A. johnsonii	玉米Z. mays	调节土壤酶活性。Regulating soil enzyme activity.	改良了土壤健康，养分吸收增加。Improved soil health and increased nutrient absorption.	［30］
	特基拉芽孢杆菌B. tequilensis 阿氏芽孢杆菌B. aryabhattai	水稻O. sativa	维持渗透平衡。Maintain osmotic balance.	改善了生化特性和养分吸收。Improved biochemical characteristics and nutrient absorption.	［97］
	甲基营养芽孢杆菌Bacillus methyllotrophicus	小麦T. aestivum	产IAA、ACC脱氨酶和胞外多糖。Production of IAA， ACC deaminase and extracellular polysaccharides （EPS）.	发芽率、根冠长、光合色素等均有显著增加。Significant increases in germination rate， root cap length， photosynthetic pigments， etc.	［101］
	巨大芽孢杆菌B. megaterium	小麦T. aestivum	产生IAA。Production of IAA.	发芽率、根冠长等生长参数均有显著提高。The growth parameters such as germination rate and root cap length have significantly improved.	［102］
干旱胁迫 Drought stress	贝莱斯芽孢杆菌Bacillus velezensis 解淀粉芽孢杆菌B. amyloliquefaciens	胡桃Juglans regia	产铁载体、氰化氢和IAA。Production of iron carrier， hydrogen cyanide and IAA.	改善了抗逆机制。Improved stress resistance mechanism.	［103］
	枯草芽孢杆菌B. subtilis	番茄S. lycopersicum	产ACC脱氨酶，降低乙烯水平。Production of ACC deaminase and reduce ethylene （ET） levels.	脯氨酸含量升高，MDA和H₂O₂含量降低。Proline content increases， MDA and H₂O₂ content decreases.	［104］
	恶臭假单胞菌Pseudomonas putida	玉米Z. mays	调节代谢、信号和应激反应基因。Regulating metabolism， signal and stress response gene.	超氧化物歧化酶、过氧化氢酶和ET表达均降低。The expression of superoxide dismutase， catalase and ET were reduced.	［105］
	固氮假单胞菌P. azotoformans	小麦T. aestivum	产生EPS、IAA和可溶性磷酸三钙。Production of EPS， IAA， and soluble tricalcium phosphate.	生长性状、光合色素效率等生理指标均有显著提高。Physiological indicators such as growth traits and photosynthetic pigment efficiency have significantly improved.	［20］
	阿拉米根瘤菌R. alamii	油菜B. chinensis	产EPS。Production of EPS.	茎部生物量增加。Increased stem biomass.	［29］
	荧光假单胞菌P. fluorescens 解淀粉芽孢杆菌B. amyloliquefaciens	薄荷Mentha hyplocalyx	调节酶活性。Regulating enzyme activity.	酶活性和总酚含量显著提高。Significant increase in enzyme activity and total phenolic content.	［106］
温度胁迫 Temperature stress	芥菜假单胞菌 Pseudomonas brassicacearum	小麦 T. aestivum	产生高分子量的耐热蛋白，调节植物抗氧化酶活性。Production of high molecular weight heat-resistant proteins to regulate plant antioxidant enzyme activity.	幼苗鲜重、抗氧化酶活性、脯氨酸和蛋白质含量显著提高。Significant increase in seedling fresh weight， antioxidant enzyme activity， proline and protein content.	［107］
	特基拉芽孢杆菌 B. tequilensis	大豆 G. max	产IAA、ABA。Production of IAA and ABA.	植株茎长、生物量和光合色素含量显著提高。Significant increase in plant stem length， biomass， and photosynthetic pigment content.	［80］
	梭形芽孢杆菌Bacillusfusiformis 球形芽孢杆菌Bacillus sphaericus	玉米 Z. mays	溶磷，产生葡萄糖酸、植物激素、儿茶酚和铁载体。Dissolve phosphorus and production of gluconic acid， phytohormone， catechol and iron carrier.	渗透酶、酚类物质、植物激素和抗氧化酶均上调。Permeases， phenols， plant hormone and antioxidant enzymes were up-regulated.	［108］
	哈茨木霉菌Trichoderma harzianum 木糖无色杆菌Achromobacter xylosoxidans	圣罗勒 Ocimum sanctum	产ACC脱氨酶。Production of ACC deaminase.	营养吸收、光合作用、淀粉和脯氨酸积累增加，产量提高。Increased nutrient absorption， photosynthesis， starch and proline accumulation， resulting in increased yield.	［28］
重金属胁迫 Heavy metal stress	气肠杆菌E. aerogenes	水稻 O. sativa	产生IAA、固氮、溶磷。Production of IAA， nitrogen fixation， and dissolved phosphorus.	光合作用增强。Enhanced photosynthesis.	［109］
	胶质类芽孢杆菌 Paenibacillus mucilaginosus 中华根瘤菌Sinorhizobium meliloti	紫花苜蓿 M. sativa	降低MDA和ROS的积累。Reduce the accumulation of MDA and ROS.	提高植株的抗氧化能力，显著降低了氧化损伤。Improve the antioxidant capacity of plants and significantly reduce oxidative damage.	［110］
	不动杆菌Acinetobacter beijerinckii 植生拉乌尔菌Raoultella planticola	大豆 G.max	产IAA、水杨酸和代谢物。Production of IAA， salicylic acid （SA）， and metabolites.	代谢物上调，氧化损伤减少。Upregulation of metabolites and reduction of oxidative damage.	［111］
	荧光假单胞菌P. fluorescens 假单胞菌Pseudomonas	向日葵 Helianthus annuus	产生长素、铁载体、ACC脱氨酶，溶磷。Production of auxin， iron carrier， ACC deaminase， and dissolve phosphorus.	茎高和茎粗、叶绿素指数及生物量增加。Increase in stem height and stem diameter， chlorophyll index， and biomass.	［112］

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