Rice Genetics Newsletter, Vol. 18

Registration of new gene symbols

The following genes are newly registered:

GENE SYMBOL REGISTRATION No. 145

Registrant:

Yoshimichi Fukuta¹⁾ and Katsunori Tamura²⁾
1) International Rice Research Institute, MCPO Box 3127, Makati City, Philippines
2) Hokuriku National Agricultural Experiment Station, Joetsu, 943-0193, Japan

Gene symbol:

Grh4

Gene name:

Green rice leafhopper resistance 4 (complementary to Grh2)

Character expression:

Grh4 conveys resistance to green rice leafhopper and acts complementarily with Grh2 located on chromosome 11. The two complementary genes convey higher level of resistance.

Name of original line:

Norin-PL5 and Norin-PL6 (Japonica type rice lines)

Gene locus:

Located between two RFLP markers, Y3870L and Y3870R on chromosome 3 with the distances of 1.4 and 0.7 cM, respectively.

Remark:

Grh2 and Grh4 were introduced into Norin-PL5 and Norin-PL6 from Indica type varieties, C203-1 and Lepe dumai, respectively.

Reference:

Fukuta, Y. et al. (1997) Breed. Sci. 47(Suppl.2): 166.
Tamura, Y. et al. (1997) Breed. Sci. 47(Suppl.2): 167.

GENE SYMBOL REGISTRATION No. 146

Registrant:

Qi Zhang, Shichen Lin, Bingyu Zhao, Chunlian Wang and Wenchai Yang Inst. Crop Breed. Cult., CAAS, Beijing, China

Gene symbol:

Xa23

Gene name:

Bacterial Blight (Xanthomonas oryze pv. oryzae) resistance 23

Character expression:

Resistance to Philippine races 1, 2, 3, 4, 5, 6, 7, 8 and 9 and 7 representative strains of Chinese pathotype at all growth stages.

Name of original line:

CBB23 (near-isogenic line with the resistance gene form Oryza rufipogon)

Gene locus:

Chromosome 11; linked to SSR marker OSR6 and RFLP marker G1465

Remark:

Data on F₂, B₁F₁ segregation and chromosomal location are reported.

Reference:

Zhang Qi et al. (1998) RGN15: 138-142.

GENE SYMBOL REGISTRATION No. 147

Registrant:

Hideyuki Hirabayashi¹⁾ , Tsugufumi Ogawa²⁾ , Darshan S. Brar³⁾ , Enrique R. Angeles³⁾ and Gurdev S. Khush³⁾
1) Kyushu National Agricultural Experiment Station, Chikugo, 833-0041 Japan
2) Chugoku National Agricultural Experiment Station, Fukuyama, 721-8514 Japan
3) International Rice Research Institute, MCPO Box 3127, Makati City, Philippines

Gene symbol:

bph11

Gene name:

brown plant hopper resistance 11

Character expression:

Resistance to brown planthopper

Gene locus:

IR54742-23-19-16-12(derived from O. officinalis)

Name of original line:

At the end part of long arm of chromosome 3

Remark:

A gene for resistance to brown planthopper introgressed from Oryza officinalis was mapped near RFLP marker G1318 on chromosome 3.

Reference:

Hirabayashi et al. (1997) SABRAO 8^th: 401-402.
Hirabayashi et al. (1998) Breed. Sci. (Suppl. 1): 82.

GENE SYMBOL REGISTRATION No. 148

Registrant:

Hideyuki Hirabayashi¹⁾ , Tsugufumi Ogawa²⁾ , Darshan S. Brar³⁾ , Enrique R. Angeles³⁾ and Gurdev S. Khush³⁾
1) Kyushu National Agricultural Experiment Station, Chikugo, 833-0041 Japan
2) Chugoku National Agricultural Experiment Station, Fukuyama, 721-8514 Japan
3) International Rice Research Institute, MCPO Box 3127, Makati City, Philippines

Gene symbol:

bph12

Gene name:

brown plant hopper resistance 12

Character expression:

Resistance to brown planthopper

Name of original line:

IR54742 (GSK185-2) (derived from O. officinalis)

Gene locus:

In the middle part of chromosome 4

Remark:

A gene for resistance to brown plant hopper introgrssed from Oryza officinalis was mapped between RFLP markers G271 and R93 on chromosome 4.

Reference:

Hirabayashi et al. (1999) Breed. Res. (Suppl. 1): 48.

GENE SYMBOL REGISTRATION No. 149

Registrant:

Xiong Wu¹⁾ , Yoshihisa Ihara¹⁾ , Kazuyoshi Takeda²⁾ and Hidemi Kitano¹⁾
1) Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya, 464-8601 Japan
2) Research Institute for Bioresources, Okayama University, Kurashiki, 710-0046 Japan

Gene symbol:

d61-1, d61-2

Gene name:

dwarf 61

Character expression:

d61-1 expresses dwarf plant type with dn-type culms, whereas d61- 2 shows a more reduced dwarf type with pseudo-d6-type culms. These recessive genes are allelic and located on chromosome 1. Recombination values of d61 with Ssi1 and shr1 are estimated to be 23.8% and 21.7%, respectively.

Name of original line:

DMT-7 (d61-1), DMT-10-1(d61-2) (Taichung 65)

Gene locus:

Chromosome 1

Remark:

Multiple alleles of d61-1 and d61-2 express two different dwarf and internode elongation patterns, dm-type and pseudo-d6-type, respectively.

Reference:

Xiong Wu et al. (1999) Breed. Sci. 49: 147-153.
Xiong Wu et al. (1999) RGN 16: 38-39.

GENE SYMBOL REGISTRATION No. 150

Registrant:

YANG Rencui, S.L. YANG, R.H. HUANG and Q.Q ZHANG (Institute of Genetics and Crop Breeding, Fujian Agricultural University, Fujian 350002, China)

Gene symbol:

eui2

Gene name:

Elongated uppermost internode 2

Character expression:

Recessive gene for elongation of the uppermost internode, non-al-lelic to eui1

Name of original line:

Xieqingzao eB-2 (XQZeB-2), a radiation-induced mutant of Xieqingzao B (XQZB)

Remark:

Data on F₂ segregation are reported

Reference:

Yang, R.C., S.L. Yang, R.H. Huang and Q.Q. Zhang, 1999. RGN 16: 41-43

B.	Report of the Committee on Gene Symbolization, Nomenclature and Linkage Groups
	A. YOSHIMURA and Y. NAGATO, CONVENERS 1) Faculty of Agriculture, Kyushu University, Fukuoka, 812-8581 Japan 2) Graduate School of Agricultural and Life Sciences, University of Tokyo, Tokyo 113-8657 Japan