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Plant growth-promoting bacteria and their application prospect in mangrove wetland

红树林湿地植物生长促进菌及其应用展望*


着重介绍从红树林根系中提取的植物促生菌的种类,即固氮细菌、溶磷细菌、光合厌氧细菌及其在红树林植被恢复中的应用前景。

Categories including nitrogen fixing bacteria,phosphate-solubilizing bacteria,photosynthetic anoxygenic bacteria of plant-growth-promoting bacteria,which isolated from rhizosphere of mangroves were presented,and their application prospect in restoration of mangrove ecosystem was discussed.


全 文 :生态科学2(1()2年8月带2l卷第3期 ECOLOGICSCIENCEAug.2002,2l3J:275—278
红树林湿地植物生长促进菌及其应用展望帛
廖宝文一 李玫 康丽华 郑松发 陈玉军£叶J目林业科学研究院热带林业研究所.广州5】0520j
YoaVBashanGinaHolguin(墨西哥西北生物研究中心,墨两哥,
【摘要】 着重介绍从红树林根系中提取的植物促生菌的种类,即固氮细菌、溶磷细菌、光台厌氧细菌及其在红树林植被饿
复中的应用前景,
关键词纠树林植物生长促进苗介绍
中圈分类号:Q938】,Q94812 文献标识码:A 文章编号:1008—8873—2002】03—275.(14
Plantgrowth·pmmotiIlgbacteriaandtheir叩plicanoⅡpmspectin舳ngrovewe land,“aoBaowen,“Mel,KangLihu .
zhengsongfa,chenYujun(TheResearchInstituteoflbpicalFores廿ycAF1Guallgzhou510520】;YoavBasharI,G1naH019uim(The
CenterfoBiolo画calResearchofLheNonhwest,Mexico)
AbstractCa【ego^esjncludi“gni仃ogen丘xjngbact州a.phosphate—s01ubllizl“gbacte^a,pho∞synthetican01ygenicba tenaof
Plan【‘grow山一Promotingbacte^a,w11ichis01ated融)mrhizosphereofma Lgroveswerepresentcd,andthe打applicationProsPecLin
rest(1ratlonofma groveecosystemwasdiscussed.
Ke,wordsMallgrove.PlantGrou曲一promotingbact舐arPGPB).Presentation
1 红树林湿地生态系统中细菌群落的营养循环
红树林湿地生态系统中虽然有机物丰富,但通常
被认为是营养贫乏的生态系统,尤其是植物生氏必需
的氮和磷”“”。”l。尽管如此.从全球规模来看红树
林是生产力最大的生态系统之一。这一自相矛盾的论
点可从红树林非常有效的营养循环系统来解释。这一
循环系统不仅使红树林保存了稀有的营养物质.而且
通过分解植物组分获得新的营养。在红树林生态系统
内,营养物质转化主要通过微生物(细菌和真菌)的
活动完成”’”⋯J.在热带红树林中细菌和真菌占微生
物生物总量的91%,而藻类和原生动物分别占7%和
2%_z“。虽然红树林湿地生态系统依靠微生物进行营
养再循环,但微生物也受益于红树林环境。在陆生环
境中.定居在植物根系表面的细菌刺激根系产生分泌
物.根系分泌物町进一步刺激根际微生物的活力”⋯。
红树林植物还可通过气生根给厌氧的底泥运送氧气⋯1。
某些红树林树种使根际土壤氧化.从而减轻了土壤中
硫化氢的有害作用8。”l。因植物而引起的土壤变化会
影响根际某些种类细菌的增殖。在红树林湿地生态系
统中.微生物和植物之间的营养循环保存了营养物质,
从而使所有生物体都受益”l。
合成物,矿物质吸收增效剂,根系发育增效剂.植物
病原体的生物防治等”’””。“J,这些植物生长促进菌
可以直接或与其它菌混合后接种到植物体上.以此来
促进植物生长。对红树林生态系统中PGPB的研究尚
处于初级阶段.这些有益的细菌是否存在于海岸红树
林中还没有完全被确定下来。
3 红树林湿地中的固氮作用
在红树林中的同氮作用是常见的。高速率的固氮
作用与枯死分解的叶片”1⋯,出水通气根(气生根)
[“31-3”,根际土壤㈨3”,树皮㈣.以及覆盖j:底泥表
面‘311和底泥中‘22’371的蓝细菌垫等因素有关。
在底泥、根际和各种红树林树种的根系表面已分
离鉴定出的固氮细菌有AzD印f—ffHm属,固氮菌属
(Az。f06口cfg,),根瘤菌属(尺眦期6i“Ⅲ),棱菌属
(∞j跗埘“m)和克雷白氏杆菌属(尉曲jiP如)“““J。
在墨西哥下旱区红树林中的大红树(尺^fz印加m
,,iⅡn2膪)、萌芽白骨壤(AvlcPM妇gPⅢnWns)和拉关
木f血2“nf“如砌mcⅢD№)根际区表面分离出几种
重氮营养菌,并已鉴定出其中的某些菌种如w6砌
-r求省科技厅回际合作项日(2KB(1682w一资助
2 红树林湿地中的植物生长促进菌≥焉:;%黔廖宝文。1963_,.男,日岍究抽主要研究方向为红树
类型竽翟誊£誊墓雾釜荔主套嚣娄:暑篙墓萎麓薹菘荸篓:雾铸3新醋懈~:一型:固氮型,溶磷型,植物激素生产者,含铁细胞 2加2一07_28收穑.2002_08_23接受
万方数据
万方数据
万方数据
万方数据
红树林湿地植物生长促进菌及其应用展望
作者: 廖宝文, 李玫, 康丽华, 郑松发, 陈玉军, Yoav Bashan, Gina Holguin
作者单位: 廖宝文,李玫,康丽华,郑松发,陈玉军(中国林业科学研究院热带林业研究所,广州,510520)
, Yoav Bashan,Gina Holguin(墨西哥西北生物研究中心,墨西哥)
刊名: 生态科学
英文刊名: ECOLOGIC SCIENCE
年,卷(期): 2002,21(3)
被引用次数: 1次

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