000 02405nab a22003977a 4500
001 G96930
003 MX-TxCIM
005 20190717174555.0
008 121211b |||p||p||||||| |z||| |
022 _a1432-2048 (Revista en electrónico)
022 0 _a0032-0935
024 8 _ahttps://doi.org/10.1007/s00425-011-1577-7
040 _aMX-TxCIM
041 0 _aEn
090 _aREP-13294
100 1 _9957
_aGuzman, C.
_gGlobal Wheat Program
_8INT3466
245 0 0 _aMolecular characterization of a new waxy allele with partial expression in spelt wheat
260 _c2012
500 _aPeer-review: Yes - Open Access: Yes|http://science.thomsonreuters.com/cgi-bin/jrnlst/jlresults.cgi?PC=MASTER&ISSN=0032-0935
520 _aStarch composition which is dependent on the waxy protein, the enzyme responsible for amylose synthesis in the grain, is an important aspect of the wheat quality. In this report, we describe the characterization of a novel Wx-A1 allele (Wx-A1g formerly known as -Wx-A1a) in Spanish spelt wheat lines which is responsible for a remarkable decline in the concentration of Wx-A1 protein found in the endosperm. Comparison of the DNA sequences in the Wx-A1a and Wx-A1g alleles showed the presence of a 160-bp insertion within the fourth intron in the latter. This insertion had some characteristics of a transposable-like element. RT-PCR analysis showed the presence of normal and aberrant mRNA transcripts in the Wx-A1g lines, indicating that the aberrant transcripts are un-spliced and contained the longer fourth intron. This may be related to the low level of Wx-A1 protein in these lines. In addition, a simple and fast PCR assay was designed for differentiating among different Wx-A1 alleles (a, b, f and g). The mutation described here is not related to either of the Wx-A1 mutations identified previously in common and durum wheats and could help to extend the range of amylose content of wheats.
536 _aGlobal Wheat Program
546 _aEnglish
591 _aNo CIMMYT affiliation
593 _aCarelia Juarez
594 _aINT3466
595 _aRPC
650 1 0 _aNull mutations
650 1 0 _aSpelt wheat
650 1 0 _aStarch
650 1 0 _aWaxy proteins
700 1 _aAlvarez, J.B.,
_ecoaut.
_92175
700 1 _aCaballero, L.,
_ecoaut.
700 1 _aYamamori, M.,
_ecoaut.
_92176
773 0 _tPlanta
_gv. 235, no. 6, p. 1331-1339
942 _cJA
999 _c29354
_d29354