Expression of a Soybean Hydroxyproline-Rich Glycoprotein Gene Is Correlated with Maturation of Roots1

Ahn, Ji Hoon; Choi, Yeonhee; Kim, Sang Gu; Kwon, Young Jun; Choi, Yang Do; Lee, Jong Seob

doi:10.1104/pp.116.2.671

Cited by 15 publications

(1 citation statement)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…GRMZM2G174736 , a candidate gene of BRD, encodes the structural proteins hydroxyproline-rich-glycoproteins (HRGPs), which are also called extensions and take part in cell wall assembly ( Saha et al, 2013 ; Chen et al, 2015 ; Borassi et al, 2021 ). It is known that the expression of HRGPs in a tissue-specific or development-specific manner ( Keller and Lamb, 1989 ; Ye and Varner, 1990 ) and involve in root development ( Ji et al, 1998 , 1; Chen et al, 2015 ; Pinski et al, 2021 ). Opposite to extensions, expansins, encoded by GRMZM2G445169 , are cell wall loosening protein to be responsible for organ growth in plants ( Cosgrove, 2000 ; Choi et al, 2008 ; Pena et al, 2015 ).…”

Section: Discussionmentioning

confidence: 99%

Genome-wide association study reveals the genetic basis of brace root angle and diameter in maize

et al. 2022

View full text Add to dashboard Cite

Brace roots are the main organ to support the above-ground part of maize plant. It involves in plant growth and development by water absorption and lodging resistance. The bracing root angle (BRA) and diameter (BRD) are important components of brace root traits. Illuminating the genetic basis of BRA and BRD will contribute the improvement for mechanized harvest and increasing production. A GWAS of BRA and BRD was conducted using an associated panel composed of 508 inbred lines of maize. The broad-sense heritability of BRA and BRD was estimated to be respectively 71% ± 0.19 and 52% ± 0.14. The phenotypic variation of BRA and BRD in the non-stiff stalk subgroup (NSS) and the stiff stalk subgroup (SS) subgroups are significantly higher than that in the tropical/subtropical subgroup (TST) subgroups. In addition, BRA and BRD are significantly positive with plant height (PH), ear length (EL), and kernel number per row (KNPR). GWAS revealed 27 candidate genes within the threshold of p < 1.84 × 10−6 by both MLM and BLINK models. Among them, three genes, GRMZM2G174736, GRMZM2G445169 and GRMZM2G479243 were involved in cell wall function, and GRMZM2G038073 encoded the NAC transcription factor family proteins. These results provide theoretical support for clarifying the genetic basis of brace roots traits.

show abstract

Section: Discussionmentioning

confidence: 99%

Genome-wide association study reveals the genetic basis of brace root angle and diameter in maize

et al. 2022

View full text Add to dashboard Cite

show abstract

Isolation and characterization of a new defense gene from soybean

Yang

et al. 2001

Sci. China Ser. C.-Life Sci.

View full text Add to dashboard Cite

A cDNA clone of a single-copy gene designated SbPRP was isolated and characterized from 2-week-old soybean seedlings. It putatively encodes a bimodular protein similar to developmentally regulated proteins in other plant species. The deduced amino acid sequence consists of 126 amino acids with a distinct proline-rich domain (17 amino acids) and a long hydrophobically cysteine-rich domain (84 amino acids), plus a signal peptide of 25 amino acids in N terminal. SbPRP mRNA transcripts accumulated in an organ specific manner. It can be detected in leaves and epicotyls of soybean seedlings, whereas virtually expression signal of SbPRP was not detected in cotyledons, hypocotyls and roots. Further Northern hybridization suggested that SbPRP steady-state mRNA level accumulated differentially not only in response to salicylic acid, but to the inoculation of soybean mosaic virus Sa strain. Also it was responsive to drought treatment and salt (NaCl) stress. Therefore it is likely that SbPRP functions as a defense gene in soybean.

show abstract

Life behind cell walls: paradigm lost, paradigm regained

Lamport

2001

CMLS, Cell. Mol. Life Sci.

View full text Add to dashboard Cite

This review of the living cell wall and its protein components is in two parts. The first is anecdotal. A personal account spanning over 40 years research may perhaps be an antidote to one stereotypical view of scientists as detached and humorless. The second part deals with the meaning of function, particularly as it applies to hydroxyproline-rich glycoproteins. Function is a difficult word to define objectively. However, with help from such luminaries as Humpty Dumpty: "A word means what I want it to mean, neither more nor less," and Wittgenstein: "Giving examples of usage ... is the only way to talk about meaning," it is possible to construct a ziggurat representing increasingly complex levels of organization from molecular structure to ecology. Forty years ago I suggested that hydroxyproline-rich structural proteins played a key role in cell wall functioning. But because the bulk of the wall is carbohydrate, there has been an understandable resistance to paradigm change. Expansins, paradoxically, contribute greatly to this resistance because their modus operandi as cell-wall-loosening proteins is based on the idea that they break hydrogen bonds between polysaccharide chains allowing slippage. However, this view is not consistent with the recent discovery [Grobe et al. (1999) Eur. J. Biochem 263: 33-40] that beta-expansins may be proteases, as it implies that the extensin network is not a straightjacket but a substrate for expansin in muro. Such a direct role for extensins in both negative and positive regulation of cell expansion and elongation may constitute a major morphogenetic mechanism operating at all levels of plant growth and development.

show abstract

Expression of a Soybean Hydroxyproline-Rich Glycoprotein Gene Is Correlated with Maturation of Roots1

Cited by 15 publications

References 43 publications

Genome-wide association study reveals the genetic basis of brace root angle and diameter in maize

Genome-wide association study reveals the genetic basis of brace root angle and diameter in maize

Isolation and characterization of a new defense gene from soybean

Life behind cell walls: paradigm lost, paradigm regained

Contact Info

Product

Resources

About