International Database for Barley Genes and Barley Genetic Stocks

BGS 678, Breviaristatum-u, ari-u

BGN  45:239 Export to PDF
Stock number: BGS 678
Locus name: Breviaristatum-u
Locus symbol: ari-u

Revised locus symbol:

The ari-u.245 mutant is an allele at the ert-t (Erectoides-t) or BRASSINOSTEROID-6-OXIDASE (HvBRD) locus, which encodes a barley brassinosteroid-6-oxidase (1). See BGS 566 for more information on the alleles at the ert-t or HvBRD locus.

Previous nomenclature and gene symbolization:

Breviaristatum-245 = ari.245 (4).

Inheritance:

Monofactorial recessive (4).
Located in chromosome 2HS (1,2); ari-u.245 is associated with SNP markers 2_0609 to 2_1377 (positions about 13.0 to 20.11 cM) from Foma in 2H bin 02 of the Bowman backcrossed-derived line BW031 (2), the ari-u.245 mutant is an allele at the ert-t or HvBRD locus, which encodes for a brassinosteroid-6-oxidase, and is located in the telomeric region of 2HS (1); in 2H bin 02.

Description:

Plants have reduced awn length, about 2/3 of normal with an undulated awn tip and an erect or brachytic growth habit (4). In the Bowman backcross-derived line for ari-u.245, BW031, a brachytic-like growth habit was observed, but expression of morphological traits was variable among nurseries with plant growth more reduced in moisture stressed nurseries. BW031 plants were 10 to 40% shorter and peduncles were 20 to 40% shorter compared to Bowman plants. Awn lengths of BW031 were 2/3 to 3/4 those for Bowman and rachis internode length varied from 2.9 to 4.3 mm compared to about 4.5 mm for Bowman. Kernels of BW031 were slightly smaller and 20% lighter. Grain yields varied from less than 1/3 to 3/4 of the Bowman yields (3). The variability in trait expression over environments observed in BW031 could be described as phenotypic plasticity, see Lacaze et al. (5). The ari-u.245 mutant in BW031 plants exhibited the brassinosteroid-deficient phenotype: shorter rachis internode length, short awns, acute leaf angles, slightly undulating basal leaf blade margins, and a slightly elongated basal rachis internode (1).

Origin of mutant:

An N-methyl-N-nitrosourea induced mutant in Foma (NGB 14659, CIho 11333) (4, 6).

Mutational events:

ari-u.245 (NGB 116055) in Foma (NGB 14659, CIho 11333) (4, 6); ari-u.304 (previously named ari-o.304) (NGB 116129) in Kristina (NGB 14661, NGB 1500) (1. 6).

Mutant used for description and seed stocks:

ari-u.245 (NGB 116055) in Foma; ari-u.245 via ND14701 in Bowman (PI 483237)*5 (BW031, NGB 20439).

References:

1. Dockter, C., D. Gruszka, I, Braumann, A. Druka, I. Druka, J. Franckowiak, S.P. Gough, A. Janeczko, M. Kurowska, J. Lundqvist, U. Lundqvist, M. Marzec, I. Matyszczak, A.H. Müller, J. Oklestkova, B. Schulz, S, Zakhrabekova, and M. Hanson. 2014. Induced variations in brassinosteroid genes define barley height and sturdiness, and expand the green revolution genetic toolkit. Plant Physiol. 166:1912-1927.

2. Druka, A., J. Franckowiak, U. Lundqvist, N. Bonar, J. Alexander, K. Houston, S. Radovic, F. Shahinnia, V. Vendramin, M. Morgante, N. Stein, and R. Waugh. 2011. Genetic dissection of barley morphology and development. Plant Physiol. 155:617-627.

3. Franckowiak, J.D. (Unpublished).

4. Kucera, J., U. Lundqvist, and Å. Gustafsson. 1975. Inheritance of breviaristatum mutants in barley. Hereditas 80:263-278.

5. Lacaze, X., P. M. Hayes, and A. Korol. 2009. Genetics of phenotypic plasticity: QTL analysis in barley, Hordeum vulgare. Heredity 102:163-173.

6. Lundqvist, U. (Unpublished).

NGB number url references to Nordic Baltic Genebankes Information System (GENBIS):

  1. NGB 116054 (https://www.nordic-baltic-genebanks.org/gringlobal/accessiondetail?accid=NGB 116054)
  2. NGB 116055 (https://www.nordic-baltic-genebanks.org/gringlobal/accessiondetail?accid=NGB 116055)

Prepared:

J.D. Franckowiak and U. Lundqvist. 2011. Barley Genet. Newsl. 41:200.

Revised:

U. Lundqvist and J.D. Franckowiak. 2015. Barley Genet. Newsl. 45:239-240.
 


CLOSE