Sprouted Sorghum Extract Elicits Coleoptile Emergence, Enhances Shoot and Root Acclimatization, and Maintains Genetic Fidelity in indica Rice

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摘要 Thehighgrowth-stimulatingeffectofplantextracthasurgedtheplantbiotechnologiststousenaturalsupplementsintheculturemediainsteadofsyntheticphytohormones.Weadvocatedtheeffectofsproutedsorghumextract(SSE)onemergence,invitroacclimatization,andgeneticfidelityincoleoptilederivedcallusofindicaricevarietyADT36.TheuseofSSEwithMurashigeSkoogmediumefficientlyacclimatizedtherootandshootapicalsystems.Ahighermatandseminalroots(3.4gbiomass)withanefficientshootprimordiumelongationwereobservedwithanincreaseintheconcentrationofSSE.SeedstreatedwithSSEmediumshowedhighergerminationandearliercoleoptilematurationabout48hcomparedtountreatedseeds,andtherewasahigherexpressionofeEF-1αwithanincreaseincoleoptilelength.B5mediumwaseffectiveoninducingembryogenicandnodularcallusfrom3-day-oldcoleoptilewith3.0mg/L2,4-dichlorophenoxyaceticacidandfurtherproliferatedeffectivelywith0.8mg/Lkinetinwithafreshweightof180mg.Highlysignificantregenerationwasobservedwithcombinationof2.5mg/L6-benzylaminopurineand3.0mg/Lα-naphthaleneaceticacid.Themetabolicandgeneticprofilesofinvitroanddirectlycultivatedplantswerethesame,examinedthroughFourier-transforminfraredspectroscopy,randomamplifiedpolymorphicDNA(RAPD),inter-simplesequencerepeat(ISSR)andR-ISSR(combinationofRAPDandISSR)markers,respectively,andthusconfirmingthesignificantefficacyoftheSSEincorporatedmedium.DisarmedT-DNAwastransformedtocoleoptilederivedcallusthroughAgrobacteriumtumefaciensLBA4404andconfirmedbyGUSassay.TheT-DNAintegrationwasconfirmedbyDNAblotanalysisusingDNAfromtransientGUS-expressedexplants.Thus,SSEcanbeusedasanaturalandorganicsupplementfororganogenesisandefficientacclimatizationsofshootandrootapicalmeristemsinregeneratedplants.
机构地区 不详
出处 《水稻科学:英文版》 2018年2期
出版日期 2018年02月12日(中国期刊网平台首次上网日期,不代表论文的发表时间)
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