Biological nitrogen fixation and biomass accumulation within poplar clones as a result of inoculations with diazotrophic endophyte consortia.
Identifieur interne : 002345 ( Main/Exploration ); précédent : 002344; suivant : 002346Biological nitrogen fixation and biomass accumulation within poplar clones as a result of inoculations with diazotrophic endophyte consortia.
Auteurs : Jenny L. Knoth [États-Unis] ; Soo-Hyung Kim [États-Unis] ; Gregory J. Ettl [États-Unis] ; Sharon L. Doty [États-Unis]Source :
- The New phytologist [ 1469-8137 ] ; 2014.
Descripteurs français
- KwdFr :
- MESH :
- croissance et développement : Populus.
- microbiologie : Populus.
- physiologie : Endophytes.
- Biomasse, Fixation de l'azote.
English descriptors
- KwdEn :
- MESH :
- growth & development : Populus.
- microbiology : Populus.
- physiology : Endophytes.
- Biomass, Nitrogen Fixation.
Abstract
Sustainable production of biomass for bioenergy relies on low-input crop production. Inoculation of bioenergy crops with plant growth-promoting endophytes has the potential to reduce fertilizer inputs through the enhancement of biological nitrogen fixation (BNF). Endophytes isolated from native poplar growing in nutrient-poor conditions were selected for a series of glasshouse and field trials designed to test the overall hypothesis that naturally occurring diazotrophic endophytes impart growth promotion of the host plants. Endophyte inoculations contributed to increased biomass over uninoculated control plants. This growth promotion was more pronounced with multi-strain consortia than with single-strain inocula. Biological nitrogen fixation was estimated through (15)N isotope dilution to be 65% nitrogen derived from air (Ndfa). Phenotypic plasticity in biomass allocation and branch production observed as a result of endophyte inoculations may be useful in bioenergy crop breeding and engineering programs.
DOI: 10.1111/nph.12536
PubMed: 24117518
Affiliations:
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Inoculation of bioenergy crops with plant growth-promoting endophytes has the potential to reduce fertilizer inputs through the enhancement of biological nitrogen fixation (BNF). Endophytes isolated from native poplar growing in nutrient-poor conditions were selected for a series of glasshouse and field trials designed to test the overall hypothesis that naturally occurring diazotrophic endophytes impart growth promotion of the host plants. Endophyte inoculations contributed to increased biomass over uninoculated control plants. This growth promotion was more pronounced with multi-strain consortia than with single-strain inocula. Biological nitrogen fixation was estimated through (15)N isotope dilution to be 65% nitrogen derived from air (Ndfa). Phenotypic plasticity in biomass allocation and branch production observed as a result of endophyte inoculations may be useful in bioenergy crop breeding and engineering programs.</AbstractText><CopyrightInformation>© 2013 The Authors. 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Knoth</name></region><name sortKey="Doty, Sharon L" sort="Doty, Sharon L" uniqKey="Doty S" first="Sharon L" last="Doty">Sharon L. Doty</name><name sortKey="Ettl, Gregory J" sort="Ettl, Gregory J" uniqKey="Ettl G" first="Gregory J" last="Ettl">Gregory J. Ettl</name><name sortKey="Kim, Soo Hyung" sort="Kim, Soo Hyung" uniqKey="Kim S" first="Soo-Hyung" last="Kim">Soo-Hyung Kim</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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