Kev ua liaj ua teb yog qhov tseem ceeb tshaj plaws hauv kev lag luam hauv ntiaj teb, thiab cov kab ke ecological ntsib ntau yam teeb meem. Kev siv tshuaj chiv thoob ntiaj teb tau loj hlob thiab ua lub luag haujlwm tseem ceeb hauv cov qoob loo yields1. Txawm li cas los xij, cov nroj tsuag uas cog rau hauv txoj kev no tsis muaj sijhawm txaus los loj hlob thiab loj hlob zoo thiab yog li ntawd tsis tau txais cov nroj tsuag zoo2. Tsis tas li ntawd, cov tshuaj lom neeg muaj kev phom sij heev tuaj yeem sib sau hauv tib neeg lub cev thiab av3. Yog li ntawd, yuav tsum tau tsim cov kev daws teeb meem zoo ib puag ncig thiab ruaj khov kom txo tau qhov xav tau ntawm cov tshuaj chiv. Cov kab mob muaj txiaj ntsig tuaj yeem yog qhov tseem ceeb ntawm cov tshuaj lom neeg lom neeg 4.
Endophytic cov zej zog nyob rau hauv nplooj sib txawv nyob ntawm seb tus tswv hom nroj tsuag los yog genotype, nroj tsuag loj hlob theem, thiab cog morphology. 13 Ntau qhov kev tshawb fawb tau tshaj tawm tias Azospirillum, Bacillus, Azotobacter, Pseudomonas, thiab Enterobacter muaj peev xwm ua tau.txhawb cov nroj tsuag loj hlob. 14 Tsis tas li ntawd, Bacillus thiab Azospirillum yog qhov kev tshawb fawb ntau tshaj plaws PGPB genera hais txog kev txhim kho cov nroj tsuag kev loj hlob thiab tawm los. 15 Kev tshawb fawb tau pom tias kev sib koom ua ke ntawm Azospirillum brasiliensis thiab Bradyrhizobium hauv legumes tuaj yeem txhim kho cov qoob loo ntawm pobkws, nplej, taum pauv, thiab taum raum. 16, 17 Kev tshawb fawb tau pom tias inoculation ntawm Salicornia nrog Bacillus licheniformis thiab lwm yam PGPBs synergistically txhawb cov nroj tsuag kev loj hlob thiab as-ham uptake. 18 Azospirillum brasiliensis Sp7 thiab Bacillus sphaericus UPMB10 txhim kho cov hauv paus loj hlob ntawm txiv tsawb qab zib. Ib yam li ntawd, cov noob fennel yog qhov nyuaj rau kev loj hlob vim qhov kev loj hlob tsis zoo thiab tsis muaj germination, tshwj xeeb tshaj yog nyob rau hauv drought kev nyuaj siab 20. Kev kho noob nrog Pseudomonas fluorescens thiab Trichoderma harzianum txhim kho kev loj hlob ntxov ntawm fennel seedlings nyob rau hauv drought kev nyuaj siab 21. Rau stevia, kev tshawb fawb tau ua los ntsuas qhov cuam tshuam ntawm mycorrhizal fungi thiab cog kev loj hlob txhawb nqa rhizobacteria (PGPR) ntawm lub peev xwm ntawm cov kab mob loj hlob, sib sau cov metabolites theem nrab, thiab nthuav qhia cov noob koom nrog hauv biosynthesis. Raws li Rahi et al.22, inoculation ntawm cov nroj tsuag nrog txawv PGPRs txhim kho lawv txoj kev loj hlob, photosynthetic Performance index, thiab tsub zuj zuj ntawm stevioside thiab stevioside A. Ntawm qhov tod tes, inoculation ntawm stevia nrog cov nroj tsuag kev loj hlob-txhim kho rhizobia thiab arbuscular mycorrhizal fungi stimulated cov ntsiab lus ntawm stevioside, thiab stevio. Oviedo-Pereira li al.24 qhia tias cov endophytes irritant Enterobacter hormaechei H2A3 thiab H5A2 nce SG cov ntsiab lus, stimulated trichome ntom nyob rau hauv nplooj, thiab txhawb tsub zuj zuj ntawm tej metabolites nyob rau hauv trichomes, tab sis lawv tsis txhawb cog kev loj hlob;
GA3 yog ib qho tseem ceeb tshaj plaws thiab ua haujlwm lom neeg zoo li gibberellin proteins31. Exogenous kev kho mob ntawm stevia nrog GA3 tuaj yeem nce qia elongation thiab flowering32. Ntawm qhov tod tes, qee cov kev tshawb fawb tau tshaj tawm tias GA3 yog ib qho inducer uas txhawb cov nroj tsuag los tsim cov metabolites theem nrab xws li antioxidants thiab pigments, thiab kuj yog ib qho kev tiv thaiv mechanism33.
Phylogenetic kev sib raug zoo ntawm kev sib cais nyob rau hauv kev sib raug zoo rau lwm yam hom. GenBank tus lej nkag tau muab rau hauv kab lus.
Amylase, cellulase thiab protease kev ua ub no tau pom tias muaj cov kab ntshiab nyob ib ncig ntawm cov cheeb tsam, thaum cov dej dawb nyob ib puag ncig cov cheeb tsam qhia txog kev ua lipase. Raws li qhia hauv Table 2, B. paramycoides SrAM4 tuaj yeem tsim tau tag nrho cov hydrolases, thaum B. paralicheniformis SrMA3 tuaj yeem tsim tau tag nrho cov enzymes tshwj tsis yog cellulase, thiab B. licheniformis SrAM2 tsim cov cellulase xwb.
Ntau qhov tseem ceeb microbial genera tau cuam tshuam nrog kev nce qib metabolite synthesis hauv cov tshuaj thiab cov nroj tsuag muaj ntxhiab74. Tag nrho cov enzymatic thiab non-enzymatic antioxidants tau nce ntau hauv S. rebaudiana Shou-2 piv rau kev tswj. Cov txiaj ntsig zoo ntawm PGPB ntawm TPC hauv nplej kuj tau tshaj tawm los ntawm Chamam li al.75; Tsis tas li ntawd, peb cov txiaj ntsig tau zoo ib yam nrog cov txiaj ntsig ntawm TPC, TFC, thiab DPPH hauv S. rebaudiana, uas tau txais txiaj ntsig los ntawm kev sib xyaw ua ke ntawm Piriformospora indica thiab Azotobacter chroococcum76. TPC thiab TFC77 tau nce siab dua hauv cov nroj tsuag basil kho nrog cov kab mob me me piv rau cov nroj tsuag tsis kho. Ntxiv mus, qhov nce hauv cov tshuaj antioxidants tuaj yeem tshwm sim rau ob qho laj thawj: hydrolytic enzymes txhawb kev ntxias cov nroj tsuag tiv thaiv cov txheej txheem tib yam li cov kab mob pathogenic kom txog thaum cov nroj tsuag hloov mus rau cov kab mob colonization78. Qhov thib ob, PGPB tuaj yeem ua tus thawj coj ntawm qhov induction ntawm bioactive compounds tsim los ntawm txoj kev shikimate hauv cov nroj tsuag siab dua thiab cov kab mob 79 .
Cov txiaj ntsig tau pom tias muaj kev sib koom ua ke ntawm nplooj ntawv tus lej, gene qhia thiab SG ntau lawm thaum ntau hom kab mob sib koom ua ke. Ntawm qhov tod tes, ob chav inoculation yog superior rau ib qho inoculation nyob rau hauv cov nqe lus ntawm cov nroj tsuag loj hlob thiab productivity.
Hydrolytic enzymes tau kuaj pom tom qab inoculation ntawm cov kab mob ntawm agar nruab nrab uas muaj qhov taw qhia substrate thiab incubation ntawm 28 ° C rau 2-5 hnub. Tom qab plating cov kab mob ntawm starch agar nruab nrab, amylase kev ua haujlwm tau txiav txim siab siv iodine 100 tov. Cellulase kev ua haujlwm tau txiav txim siab siv 0.2% aqueous Congo liab reagent raws li txoj kev ntawm Kianngam li al. 101. Kev ua haujlwm Protease tau pom los ntawm thaj chaw ntshiab nyob ib puag ncig thaj tsam plated ntawm skim mis agar nruab nrab raws li tau piav qhia los ntawm Cui li al. 102. Ntawm qhov tod tes, lipase 100 tau kuaj pom tom qab inoculation ntawm Tween agar nruab nrab.
Post lub sij hawm: Jan-06-2025