Early nodule senescence is activated in symbiotic mutants of pea (Pisum sativum L.) forming ineffective nodules blocked at different nodule developmental stages.
Plant symbiotic mutants are useful tool to uncover the molecular-genetic mechanisms of nodule senescence. The pea (Pisum sativum L.) mutants SGEFix−-1 (sym40), SGEFix−-3 (sym26), and SGEFix−-7 (sym27) display an early nodule senescence phenotype, whereas the mutant SGEFix−-2 (sym33) does not show pr...
| Published in: | Protoplasma Vol. 255; no. 5; pp. 1443 - 1460 |
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| Main Authors: | , , |
| Format: | Journal Article |
| Published: |
Springer Nature
Sep2018
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| Online Access: | View this record in EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=131436304&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 131436304 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 0033183X 2CF jtl: Protoplasma issn: 0033183X maglogo: N pubinfo: dt: Sep2018 vid: 255 iid: 5 pid: 237 pub: Springer Nature place: New York, New York artinfo: ui: 131436304 10.1007/s00709-018-1246-9 131436304 ppf: 1443 ppct: 17 formats: fmt: – @attributes: type: T – @attributes: type: P tig: atl: Early nodule senescence is activated in symbiotic mutants of pea (Pisum sativum L.) forming ineffective nodules blocked at different nodule developmental stages. aug: au: Serova, Tatiana A. Tsyganova, Anna V. Tsyganov, Viktor E. affil: All-Russia Research Institute for Agricultural Microbiology, Laboratory of Molecular and Cellular Biology, Podbelsky Chaussee 3, 196608, Pushkin 8, Saint-Petersburg, Russia sug: ab: Plant symbiotic mutants are useful tool to uncover the molecular-genetic mechanisms of nodule senescence. The pea (Pisum sativum L.) mutants SGEFix−-1 (sym40), SGEFix−-3 (sym26), and SGEFix−-7 (sym27) display an early nodule senescence phenotype, whereas the mutant SGEFix−-2 (sym33) does not show premature degradation of symbiotic structures, but its nodules show an enhanced immune response. The nodules of these mutants were compared with each other and with those of the wild-type SGE line using seven marker genes that are known to be activated during nodule senescence. In wild-type SGE nodules, transcript levels of all of the senescence-associated genes were highest at 6 weeks after inoculation (WAI). The senescence-associated genes showed higher transcript abundance in mutant nodules than in wild-type nodules at 2 WAI and attained maximum levels in the mutant nodules at 4 WAI. Immunolocalization analyses showed that the ethylene precursor 1-aminocyclopropane-1-carboxylate accumulated earlier in the mutant nodules than in wild-type nodules. Together, these results showed that nodule senescence was activated in ineffective nodules blocked at different developmental stages in pea lines that harbor mutations in four symbiotic genes. pubtype: Academic Journal doctype: Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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