CcNAC6 Acts as a Positive Regulator of Secondary Cell Wall Synthesis in Sudan Grass ( Sorghum sudanense S.)
The degree of forage lignification is a key factor affecting its digestibility by ruminants such as cattle and sheep. Sudan grass ( S.) is a high-quality sorghum forage, and its lignocellulose is mostly stored in the secondary cell wall. However, the secondary cell wall synthesis mechanism of Sudan...
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Published in | Plants (Basel) Vol. 13; no. 10; p. 1352 |
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Main Authors | , , , , , , |
Format | Journal Article |
Language | English |
Published |
Switzerland
MDPI AG
14.05.2024
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Subjects | |
Online Access | Get full text |
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Summary: | The degree of forage lignification is a key factor affecting its digestibility by ruminants such as cattle and sheep. Sudan grass (
S.) is a high-quality sorghum forage, and its lignocellulose is mostly stored in the secondary cell wall. However, the secondary cell wall synthesis mechanism of Sudan grass has not yet been studied in depth. To further study the secondary cell wall synthesis mechanism of Sudan grass using established transcriptome data, this study found that
, a homologous gene of
, is related to the secondary cell wall synthesis of Sudan grass. Accordingly, we constructed a
-overexpressing line of
to investigate the function of the
gene in secondary cell wall synthesis. The results showed that the overexpression of the
gene could significantly increase the lignin content of
. Based on subcellular localization analysis, CcNAC6 is found in the nucleus. In addition, yeast two-hybridization screening showed that CcCP1, associated with secondary cell wall synthesis, can interact with CcNAC6. Therefore, the above results indicate that
has a positive regulatory effect on the secondary cell wall synthesis of Sudan grass, and it is speculated that CcNAC6 may be the main regulator of the secondary cell wall synthesis of Sudan grass through its interaction with another regulatory protein, CcCP1. This study provides a theoretical basis and new genetic resources for the creation of new Sudan grass germplasm with a low lignin content. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 2223-7747 2223-7747 |
DOI: | 10.3390/plants13101352 |