lignin modification leads to increased nodule numbers in alfalfa

the progress of genetic improvement in alfalfa medicago

on the other hand, alfalfa forage needs to possess additional fermentable carbohydrates, proteins with a balanced amino acid profile that are gradually degraded in the rumen of domestic livestock, and zero anti-nutritional factors, which are the major concerns of recent interest in alfalfa.

on the inside

because lignin modification is known to impact flavonoid biosynthesis and hormone signaling, two processes critical to nodule formation, it is important to know whether the reduced growth phenotype of low-lignin alfalfa plants may result, if only in part, from altered establishment and/or functioning of the rhizobial symbiosis.

maria j. monteros phd noble research institute, ardmore

lignin is a cell wall polymer that reduces the enzymatic digestibility and conversion efficiency of lignocellulosic biomass to ethanol. down-regulation of the hydroxycinnamoyl coa: shikimate hydroxycinnamoyl transferase hct gene reduces lignin content in alfalfa medicago sativa l. .

genetic modification of lignin biosynthesis for improved

number, fewer rearrangements of the transgene , it is the method of choice for transforming biofuel crops somleva et al. 2002 . as far as the modification of lignin genes is concerned, constant or specific knockdown and overexpression techniques are being used capell and christou 2004 .

roundup ready, low lignin and other new traits in alfalfa

alfalfa stems from reduced lignin genotypes increased sugar yield which potentially could increase ethanol > 50% compared to standard alfalfa. in the current study, the null lines and the check variety legendairy 5.0 had similar fiber digestibility which gradually declined as maturity advanced later harvest date .

lignin modification leads to increased nodule numbers in

nodulation in roots of reduced-lignin alfalfa plants. the roots of hct down-regulated reduced-lignin plants had increased numbers of nodules per root biomass in both greenhouse and field experiments. the increased nodule number in the hct down-regulated lines was

lignin modification leads to increased nodule numbers in

abstract: reduction of lignin levels in the forage legume alfalfa medicago sativa by down-regulation of the monolignol biosynthetic enzyme hydroxycinnamoyl coenzyme a:shikimate hydroxycinnamoyl transferase hct results in strongly increased digestibility and processing ability of lignocellulose.

the progress of genetic improvement in alfalfa medicago

alfalfa medicago sativa l. is a perennial and outcrossing species, widely grown as a forage legume for hay, pasture and silage.the genetic engineering approaches involve the transfer of useful or novel gene s into alfalfa to improve desired traits. the recent development of genetic engineering is extensively applied to basic and applied research for alfalfa improvement, including

michael udvardi, ph.d. - noble foundation

lignin modification leads to increased nodule numbers in alfalfa medicagosativa l. . p., udvardi, m. k., rennenberg, h. and flemetakis, e. 2013 . cessation of photosynthesis in lotus japonicus leaves leads to reprogramming of nodule metabolism . journal of genome-wide snp discovery in tetraploid alfalfa using 454 sequencing and high

metabolic flux towards the iso flavonoid pathway in

metabolic flux towards the iso flavonoid pathway in lignin modified alfalfa lines induces resistance against fusarium oxysporum f. sp. medicaginis. downregulation of lignin in alfalfa medicago sativa l. is associated with increased availability of cell wall polysaccharides in plant cells.

lignin modification leads to increased nodule numbers in

reduction of lignin levels in the forage legume alfalfa medicago sativa by down-regulation of the monolignol biosynthetic enzyme hydroxycinnamoyl coenzyme a:shikimate hydroxycinnamoyl transferase hct results in strongly increased digestibility and processing ability of lignocellulose.

apetala 2 transcription factor cbx1 is a regulator of

an ap2 family gene cbx1 is involved in mycorrhizal symbiosis and growth of lotus japonicus. apetala 2 ap2 transcriptional regulator is highly conserved in plants. cbx1 from lotus japonicus is a member of ap2 family. amf arbuscular mycorrhizal fungi inoculation experiment demonstrated that expression of cbx1 was significantly induced by amf.

lignin modification leads to increased nodule numbers in

targeted lignin modification on the below-ground organs roots and nodules of alfalfa plants. hct down-regulated alfalfa plants exhibit a striking reduction in root growth accompanied by an unexpected increase in nodule numbers when grown in the greenhouse or in the field.

msmir156 affects global gene expression and - springerlink

microrna156 mir156 regulates a network of downstream genes to affect plant growth and development. we previously generated alfalfa medicago sativa plants that overexpress homologous mir156 msmir156oe , and identified three of its spl target genes. these plants exhibited increased vegetative yield, delayed flowering and longer roots.

maria monteros, ph.d. - noble foundation

agronomic performance and lignin content of hct down-regulated alfalfa medicago sativa l. . bioenergy research lignin modification leads to increased nodule numbers in alfalfa medicagosativa l. . plant physiology leaf trait coloration in white clover and molecular mapping of the red midrib and leaflet number traits. crop science, 50

apetala 2 transcription factor cbx1 is a regulator of

gallego-giraldo l, bhattarai k, pislariu ci, nakashima j, jikumaru y, kamiya y, udvardi mk, monteros mj, dixon ra 2014 lignin modification leads to increased nodule numbers in alfalfa. plant physiol 164:1139 1150

lignin modification leads to increased nodule numbers in

lignin modification leads to increased nodule numbers in alfalfa lignin modification leads to increased nodule numbers in alfalfa lina gallego-giraldo , kishor bhattarai , catalina i. pislariu , jin nakashima , yusuke jikumaru , yuji kamiya , michael k. udvardi , maria j. monteros , and richard a. dixon 00:00:00 reduction of lignin levels in the forage legume alfalfa medicago

lignin modification leads to increased nodule numbers in

targeted lignin modification on the below-ground organs roots and nodules of alfalfa plants. hct down-regulated alfalfa plants exhibit a striking reduction in root growth accompanied by an. unexpected increase in nodule numbers when grown in the greenhouse or in the field.

characterization of the plant growth promoting bacterium

researchers have given a considerable attention to bacterial endophytes of root-nodules of alfalfa medicago sativa l. due to its significant role in increasing nitrogen input to soils gallego-giraldo et al., 2014 .

recognizing our authors

y lignin modification leads to increased nodule numbers in alfalfa y basic helix-loop-helix transcription factors jasmonate-associated myc2-like1 jam1 , jam2, and jam3 are negative regulators of jasmonate responses in arabidopsis

lignin modication leads to increased nodule

of constitutively targeted lignin modication on the belowground organs roots and nodules of alfalfa plants. hct down-regulated alfalfa plants exhibit a striking reduction in root growth accompanied by an unexpected increase in nodule numbers when grown in the greenhouse or in the eld.

jin nakashima's research works noble research institute

reduction of lignin levels in the forage legume alfalfa by down-regulation of the monolignol biosynthetic enzyme hydroxycinnamoyl coa: shikimate hydroxycinnamoyl transferase hct results in

lina gallego-giraldo phd university of north texas

downregulation of the expression of enzymes involved in lignin biosynthesis in alfalfa medicago sativa l. has been shown to result in reduced cell wall recalcitrance and increased saccharification.

reduced-lignin alfalfa: a current assessment - progressive

several other companies have released alfalfa varieties that are reported to be higher quality than conventional alfalfa varieties, but without any claims of lower lignin content. reduced-lignin content by itself is of little benefit, unless it impacts ndfd. reduced lignin could lead to increased lodging,

lignin modification leads to increased nodule numbers in

given the importance of nitrogen fixation for legume growth, we evaluated the impact of constitutively targeted lignin modification on the belowground organs roots and nodules of alfalfa plants. hct down-regulated alfalfa plants exhibit a striking reduction in root growth accompanied by an unexpected increase in nodule numbers when grown in the greenhouse or in the field.

effect of rhizobia symbiosis on lignin levels and forage

our results indicate that rhizobia symbiosis increased lignin content and decreased forage quality in alfalfa could be a result of defensive response of plants to rhizobial invasion. the increased lignin might be defense lignin, being distinct from developmental lignin which is induced by other stress stange et al., 2001 .

genetic manipulation of lignin reduces recalcitrance and

lignin modification leads to increased nodule numbers in alfalfa a genomics approach to deciphering lignin biosynthesis in switchgrass loss of function of cinnamyl alcohol dehydrogenase 1 leads to unconventional lignin and a temperature-sensitive growth defect in medicago truncatula