DOI: 10.3724/SP.J.1006.2019.83058

Acta Agronomica Sinica (作物学报) 2019/45:5 PP.656-661

Genetic analysis and causal gene identification of maize viviparous mutant vp-like8

The maize mutant vp-like8 shows clear viviparous phenotype and stable inheritance, and genetic analysis showed that the mutant phenotype was controlled by a single recessive gene. Using an F2 segregation population derived from vp-like8 and inbred line Zheng 58, the causal gene was mapped to an interval from 160.4 Mb to 165.6 Mb on chromosome 3 by the BSR-Seq technology. According to the maize genomic database, a previously discovered viviparous gene Vp1 was identified to be in this mapping interval. The test crosses from vp1 and vp-like8 heterozygous plants showed a 3:1 segregation ratio between normal and viviparous kernels. The genomic sequence analysis revealed that vp-like8 mutant had a 343 bp deletion in the second intron and 222 bp insertion in the third intron of Vp1 gene, which is different from vp1 mutation of an only 343 bp deletion in the second intron of Vp1 gene. Further real time PCR analysis revealed that, compared with the normal kernels, the transcript level of Vp1 was significantly decreased both in vp-like8 and vp1 viviparous kernels. Taken together, these evidences suggest that vp-like8 is a new allele mutant of Vp1.

Key words:maize,viviparous,mutant,Vp1,gene mapping

ReleaseDate:2019-11-05 15:29:59

[1] Eyster W H. A primitive sporophyte in maize. Am J Bot, 1924, 11:7-14.

[2] Eyster W H. A second factor for primitive sporophyte in maize. Am Nat, 1924, 58:436-439.

[3] Lindstrom E W. Heritable characters of maize:XⅢ. Endosperm defects-sweet defective and flint-defective. J Hered, 1923, 14:127-135.

[4] Mangelsdorf P C. The inheritance of defective seeds in maize. J Hered, 1923, 14:119-125.

[5] Mangelsdorf P C. The genetics and morphology of some endosperm characters in maize. Conn Agric Exp Stn Bull, 1926, 279:513-614.

[6] Robertson D S. The genetics of vivipary in maize. Genetics, 1955, 40:745.

[7] McCarty D R, Hattori T, Carson C B, Vasil V, Lazar M, Vasil I K. The Viviparous1 developmental gene of maize encodes a novel transcriptional activator. Cell, 1991, 66:895-905.

[8] Suzuki M, Kao C Y, Cocciolone S, McCarty D R. Maize VP1 complements Arabidopsis abi3 and confers a novel ABA/auxin interaction in roots. Plant J, 2001, 28:409-418.

[9] Suzuki M, Latshaw S, Sato Y, Settles A M, Koch K E, Hannah L C, McCarty D R. The maize Viviparous8 locus, encoding a putative ALTERED MERISTEM PROGRAM1-like peptidase, regulates abscisic acid accumulation and coordinates embryo and endosperm development. Plant Physiol, 2008, 146:1193-1206.

[10] Porch T G, Tseung C W, Schmelz E A, Settles A M. The maize Viviparous10/Viviparous13 locus encodes the Cnx1 gene required for molybdenum cofactor biosynthesis. Plant J, 2006, 45:250-263.

[11] Schwartz S H, Tan B C, Gage D A, Zeevaart J A, McCarty D R. Specific oxidative cleavage of carotenoids by VP14 of maize. Science, 1997, 276:1872-1874.

[12] Suzuki M, Mark Settles A, Tseung C W, Li Q B, Latshaw S, Wu S, McCarty D R. The maize viviparous15 locus encodes the molybdopterin synthase small subunit. Plant J, 2006, 45:264-274.

[13] Hable W E, Oishi K K, Schumaker K S. Viviparous-5 encodes phytoenedesaturase, an enzyme essential for abscisic acid (ABA) accumulation and seed development in maize. Mol General Genet, 1998, 257:167-176.

[14] Singh M, Lewis P E, Hardeman K, Bai L, Rose J K, Mazourek M, Brutnell T P. Activator mutagenesis of the pink scutellum1/viviparous7 locus of maize. Plant Cell, 2003, 15:874-884.

[15] Maluf M P, Saab I N, Wurtzel E T, Mark Settles A. The viviparous12 maize mutant is deficient in abscisic acid, carotenoids, and chlorophyll synthesis. J Exp Bot, 1997, 48:1259-1268.

[16] Mayfield S P, Nelson T, Taylor W C, Malkin R. Carotenoid synthesis and pleiotropic effects in carotenoid-deficient seedlings of maize. Planta, 1986, 169:23-32.

[17] Treharne K J, Mercer E I, Goodwin T W. Carotenoid biosynthesis in some maize mutants. Phytochemistry, 1966, 5:581-587.

[18] Qi W, Zhu J, Wu Q, Wang Q, Li X, Yao D, Jin Y, Wang G, Wang G, Song R. Maize rea1 mutant stimulates ribosome use efficiency and triggers distinct transcriptional and translational responses. Plant Physiol, 2016, 170:971-988.

[19] McCarty D R, Carson C B, Stinard P S, Robertson D S. Molecular analysis of viviparous-1:an abscisic acid-insensitive mutant of maize. Plant Cell, 1989, 1:523-532.

[20] Hattori T, Vasil V, Rosenkrans L, Cocciolone S M, Vasil I K, Quatrano R S, McCarty D R. The Viviparous1 gene and abscisic acid activate the C1 regulatory gene for anthocyanin biosynthesis during seed maturation in maize. Gene Dev, 1992, 6:609-618.

[21] Carson C B, Hattori T, Rosenkrans L, Vasil V, Vasil I K, Peterson P A, McCarty D R. The quiescent/colorless alleles of viviparous1 show that the conserved B3 domain of VP1 is not essential for ABA-regulated gene expression in the seed. Plant J, 1997, 12:1231-1240.

[22] Liu S, Yeh C T, Tang H M, Nettleton D, Schnable P S. Gene mapping via bulked segregant RNA-Seq (BSR-Seq). PLoS One, 2012, 7:e36406.

[23] 王瑞, 张秀艳, 陈阳松, 杜依聪, 汤继华, 王国英, 郑军. 一个新的玉米Vp15基因等位突变体的遗传分析与分子鉴定. 作物学报, 2018, 44:370-376. Wang R, Zhang X Y, Chen Y S, Du Y C, Tang J H, Wang G Y, Zheng J. Genetic analysis and molecular characterization of a new allelic mutant of vp15 gene in maize. Acta Agron Sin, 2018, 44:370-376(in Chinese with English abstract).

[24] 王关林, 方宏筠. 植物基因工程(第2版). 北京:科学出版社, 2002. pp 742-744. Wang G L, Fang H J. Plant Genetic Engineering, 2nd edn. Beijing:Science Press, 2002. pp 742-744(in Chinese).

[25] Li C, Ni P, Francki M, Hunter A, Zhang Y, Schibeci D, Li H, Tarr A, Wang J, Cakir M, Yu J, Bellgard M, Lance R, Appels R. Genes controlling seed dormancy and pre-harvest sprouting in a rice-wheat-barley comparison. Funct Integr Genomic, 2004, 4:84-93.

[26] Rohde A, Van Montagu M, Boerjan W. The ABSCISIC ACID-INSENSITIVE 3(ABI3) gene is expressed during vegetative quiescence processes in Arabidopsis. Plant Cell Environ, 1999, 22:261-270.

[27] Hoecker U, Vasil I K, McCarty D R. Integrated control of seed maturation and germination programs by activator and repressor functions of Viviparous 1 of maize. Gene Dev, 1995, 9:2459- 2469.

[28] Rohde A, De Rycke R, Beeckman T, Engler G, Van Montagu M, Boerjan W. ABI3 affects plastid differentiation in dark-grown Arabidopsis seedlings. Plant Cell, 2000, 12:35-52.

[29] Rohde A, Kurup S, Holdsworth M. ABI3 emerges from the seed. Trends Plant Sci, 2000, 5:418-419.

[30] Rohde A, Prinsen E, De Rycke R, Engler G, Van Montagu M, Boerjan W. PtABI3 impinges on the growth and differentiation of embryonic leaves during bud set in poplar. Plant Cell, 2002, 14:1885-1901.

[31] Brady S M, Sarkar S F, Bonetta D, McCourt P. The ABSCISIC ACID INSENSITIVE 3(ABI3) gene is modulated by farnesylation and is involved in auxin signaling and lateral root development in Arabidopsis. Plant J, 2003, 34:67-75.