东北林业大学学报
東北林業大學學報
동북임업대학학보
JOURNAL OF NORTHEAST FORESTRY UNIVERSITY
2014年
5期
110-114
,共5页
黄色须腹菌%黑松%菌根辅助细菌%短小芽孢杆菌%藤黄微球菌
黃色鬚腹菌%黑鬆%菌根輔助細菌%短小芽孢桿菌%籐黃微毬菌
황색수복균%흑송%균근보조세균%단소아포간균%등황미구균
Rhizopogen luteous%Pinus thunbergi%Mycorrhiza helper bacteria%Bacillus pumlius%Micrococcus luteus
采用干皿对抗法和双接种盆栽试验,从黑松-黄色须腹菌( Rh izopogen luteous,Rl)菌根根际土壤中分离筛选获得2株菌根辅助细菌HR10和HR15菌株。离体互作结果表明,菌株HR10和HR15的菌体及胞外代谢产物均可有效提高Rl菌丝的生长,其菌体对Rl菌丝生长的增长率分别达到13.1%和33.6%。盆栽试验表明, HR10和HR15菌株分别与Rl双接种黑松幼苗后对松苗生长有显著的促进作用,同时还有效提高了根系的菌根侵染率,单接Rl处理的菌根侵染率为40.83%,Rl+HR10和Rl+HR15处理的分别为71.54%和60.97%。单接种HR10和HR15也可促进黑松生长,其中单接种HR10处理松苗长势好于双接种。这说明HR10和HR15既是黑松-黄色须腹菌的菌根辅助细菌,也是植物促生细菌,对黑松的生长具有直接的促进作用。经形态学观察、Biolog微生物系统鉴定及16S rRNA分析,菌株HR10和HR15分别被鉴定为短小芽孢杆菌( Bacli lus pumilus)和藤黄微球菌( Microccoc us luteus),两者在GenBank数据库中的登录号分别为FJ040808和FJ040810。
採用榦皿對抗法和雙接種盆栽試驗,從黑鬆-黃色鬚腹菌( Rh izopogen luteous,Rl)菌根根際土壤中分離篩選穫得2株菌根輔助細菌HR10和HR15菌株。離體互作結果錶明,菌株HR10和HR15的菌體及胞外代謝產物均可有效提高Rl菌絲的生長,其菌體對Rl菌絲生長的增長率分彆達到13.1%和33.6%。盆栽試驗錶明, HR10和HR15菌株分彆與Rl雙接種黑鬆幼苗後對鬆苗生長有顯著的促進作用,同時還有效提高瞭根繫的菌根侵染率,單接Rl處理的菌根侵染率為40.83%,Rl+HR10和Rl+HR15處理的分彆為71.54%和60.97%。單接種HR10和HR15也可促進黑鬆生長,其中單接種HR10處理鬆苗長勢好于雙接種。這說明HR10和HR15既是黑鬆-黃色鬚腹菌的菌根輔助細菌,也是植物促生細菌,對黑鬆的生長具有直接的促進作用。經形態學觀察、Biolog微生物繫統鑒定及16S rRNA分析,菌株HR10和HR15分彆被鑒定為短小芽孢桿菌( Bacli lus pumilus)和籐黃微毬菌( Microccoc us luteus),兩者在GenBank數據庫中的登錄號分彆為FJ040808和FJ040810。
채용간명대항법화쌍접충분재시험,종흑송-황색수복균( Rh izopogen luteous,Rl)균근근제토양중분리사선획득2주균근보조세균HR10화HR15균주。리체호작결과표명,균주HR10화HR15적균체급포외대사산물균가유효제고Rl균사적생장,기균체대Rl균사생장적증장솔분별체도13.1%화33.6%。분재시험표명, HR10화HR15균주분별여Rl쌍접충흑송유묘후대송묘생장유현저적촉진작용,동시환유효제고료근계적균근침염솔,단접Rl처리적균근침염솔위40.83%,Rl+HR10화Rl+HR15처리적분별위71.54%화60.97%。단접충HR10화HR15야가촉진흑송생장,기중단접충HR10처리송묘장세호우쌍접충。저설명HR10화HR15기시흑송-황색수복균적균근보조세균,야시식물촉생세균,대흑송적생장구유직접적촉진작용。경형태학관찰、Biolog미생물계통감정급16S rRNA분석,균주HR10화HR15분별피감정위단소아포간균( Bacli lus pumilus)화등황미구균( Microccoc us luteus),량자재GenBank수거고중적등록호분별위FJ040808화FJ040810。
We isolated two MHB, HR10 and HR15, from the mycorrhizosphere of Pinus thunbergii inoculatedwith Rhizipogen luteous (Rl) by dry-plate confrontation assay and double pot experiment.The confrontation assay shows that HR10 and HR15 can significantly promote the hyphal growth of Rl by 13.1%and 33.6%, respectively.HR10 and HR15 can signif-icantly stimulate P.thunbergii-R.luteous symbiosis.Rl can significantly stimulate the mycorrhizal formation in the pres-ence of HR10 and HR15 (71.54%and 60.97%, respectively), compared with the control Rl (40.83%).By the mor-phological observation, Biolog analysis and 16S rRNA sequencing methods, HR10 and HR15 are identified as Bacillus pumlius and Micrococcus luteus, with the accession number of FJ040808 and FJ040810 in Genbank database, respectively.