Ectopic Lignification in the Flax lignified bast fiber1 Mutant Stem Is Associated with Tissue-Specific Modifications in Gene Expression and Cell Wall Composition

被引：41

作者：

Chantreau, Maxime ^{[1
,2
]}

Portelette, Antoine ^{[3
,4
]}

Dauwe, Rebecca ^{[5
]}

Kiyoto, Shingo ^{[3
,4
]}

Cronier, David ^{[3
,4
]}

Morreel, Kris ^{[7
,8
]}

Arribat, Sandrine ^{[1
,2
]}

Neutelings, Godfrey ^{[1
,2
]}

Chabi, Malika ^{[1
,2
]}

Boerjan, Wout ^{[7
,8
]}

Yoshinaga, Arata ^{[6
]}

Mesnard, Francois ^{[5
]}

Grec, Sebastien ^{[1
,2
]}

Chabbert, Brigitte ^{[3
,4
]}

Hawkins, Simon ^{[1
,2
]}

机构：

[1] Univ Lille 1, UMR1281, F-59650 Villeneuve Dascq, France

[2] INRA, UMR1281, F-59650 Villeneuve Dascq, France

[3] INRA, UMR614, F-51100 Reims, France

[4] Univ Reims, UMR614, F-51100 Reims, France

[5] Univ Picardie Jules Verne, EA 3900, BIOPI, Lab Phytotechnol, F-80037 Amiens 1, France

[6] Kyoto Univ, Grad Sch Agr, Div Forest & Biomat Sci, Lab Tree Cell Biol,Sakyo Ku, Kyoto 6068502, Japan

[7] Univ Ghent VIB, Dept Plant Syst Biol, B-9052 Ghent, Belgium

[8] UGent, Dept Plant Biotechnol & Bioinformat, B-9052 Ghent, Belgium

来源：

PLANT CELL | 2014年 / 26卷 / 11期

关键词：

LIGNIN BIOSYNTHESIS PERTURBATIONS; ARABINOGALACTAN-PROTEINS; SUPEROXIDE-DISMUTASE; MICROARRAY DATA; ARABIDOPSIS; FIBERS; PEROXIDASES; CELLULOSE; GROWTH; IDENTIFICATION;

D O I：

10.1105/tpc.114.130443

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Histochemical screening of a flax ethyl methanesulfonate population led to the identification of 93 independent M2 mutant families showing ectopic lignification in the secondary cell wall of stem bast fibers. We named this core collection the Linum usitatissimum (flax) lbf mutants for lignified bast fibers and believe that this population represents a novel biological resource for investigating how bast fiber plants regulate lignin biosynthesis. As a proof of concept, we characterized the lbf1 mutant and showed that the lignin content increased by 350% in outer stem tissues containing bast fibers but was unchanged in inner stem tissues containing xylem. Chemical and NMR analyses indicated that bast fiber ectopic lignin was highly condensed and rich in G-units. Liquid chromatography-mass spectrometry profiling showed large modifications in the oligolignol pool of lbf1 inner- and outer-stem tissues that could be related to ectopic lignification. Immunological and chemical analyses revealed that lbf1 mutants also showed changes to other cell wall polymers. Whole-genome transcriptomics suggested that ectopic lignification of flax bast fibers could be caused by increased transcript accumulation of (1) the cinnamoyl-CoA reductase, cinnamyl alcohol dehydrogenase, and caffeic acid O-methyltransferase monolignol biosynthesis genes, (2) several lignin-associated peroxidase genes, and (3) genes coding for respiratory burst oxidase homolog NADPH-oxidases necessary to increase H2O2 supply.

引用

页码：4462 / 4482

页数：21

共 83 条

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