SSR loci potentially associated with high amylopectine content in maize kernel endosperm
As a component of functional nutrition, maize cultivars with “non-traditional” kernel composition (waxy, oilbearing, sugar, opaque, etc. phenotypic variants) are promising. Mutations in the waxy gene, which break down the structure and function of the enzyme for amylose biosynthesis, lead to a waxy...
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Siberian Branch of the Russian Academy of Sciences, Federal Research Center Institute of Cytology and Genetics, The Vavilov Society of Geneticists and Breeders
2018-09-01
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| Series: | Вавиловский журнал генетики и селекции |
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| Online Access: | https://vavilov.elpub.ru/jour/article/view/1647 |
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| author | S. I. Vakula O. A. Orlovskaya L. V. Khotyleva A. V. Kilchevsky |
| author_facet | S. I. Vakula O. A. Orlovskaya L. V. Khotyleva A. V. Kilchevsky |
| author_sort | S. I. Vakula |
| collection | DOAJ |
| description | As a component of functional nutrition, maize cultivars with “non-traditional” kernel composition (waxy, oilbearing, sugar, opaque, etc. phenotypic variants) are promising. Mutations in the waxy gene, which break down the structure and function of the enzyme for amylose biosynthesis, lead to a waxy (with a high content of amylopectin) endosperm formation. High variability of the waxy gene limits the use of microsatellite loci in marker associated selection of waxy maize genotypes. The increased frequency of gene rearrangements within the waxy locus facilitated the origination of many high-amylopectin corn lines carrying different SSR allelic variants. The purpose of this study was to evaluate the effectiveness of using waxy locus microsatellite sequences for identification and labeling of waxy maize genotypes. To this end, a complex of biochemical (calorimetry, bichromate method), molecular-genetic (SSR-PCR, capillary gel electrophoresis with fluorescent detection of fragments) and statistical (descriptive statistics, cluster analysis, χ2) analysis methods was used. Plant material used were 33 samples of corn kernels including mutant forms with a high content of amylose, amylopectin, short-chain starches, were kindly provided by VIR genetic collection (Russian Federation) and Maize Genetics Cooperation Stock Center (USA). The contents of starch, short-chain soluble carbohydrates, amylose, amylopectin in the grain of 33 maize samples were evaluated. Compositionally similar (to endosperm carbohydrates content) groups of samples were identified. They include 13 high-amylopectin samples carriers of waxy (wx) gene mutations and 20 samples with wild-type character (Wx). Molecular genetic screening of the collection included an analysis of the polymorphism of the microsatellite loci phi022, phi027, phi061 associated with the waxy gene sequence. Allelic composition of individual loci and their combinations were analyzed in relation to the accumulation of reserve carbohydrates in the kernel endosperm. Only the analysis of the phi022/phi027 combination or all three markers in the complex allows differentiating the wild Wx and mutant wx phenotypes of maize. It was shown that not the individual allelic polymorphisms of the phi022, phi027, phi061 loci are efficient for the markerassociated selection of high-amylopectin maize, but their unique combinations. |
| format | Article |
| id | doaj-art-7d33413e2dc4408ea369f7883f092b74 |
| institution | Kabale University |
| issn | 2500-3259 |
| language | English |
| publishDate | 2018-09-01 |
| publisher | Siberian Branch of the Russian Academy of Sciences, Federal Research Center Institute of Cytology and Genetics, The Vavilov Society of Geneticists and Breeders |
| record_format | Article |
| series | Вавиловский журнал генетики и селекции |
| spelling | doaj-art-7d33413e2dc4408ea369f7883f092b742025-02-01T09:58:06ZengSiberian Branch of the Russian Academy of Sciences, Federal Research Center Institute of Cytology and Genetics, The Vavilov Society of Geneticists and BreedersВавиловский журнал генетики и селекции2500-32592018-09-0122664064710.18699/VJ18.405804SSR loci potentially associated with high amylopectine content in maize kernel endospermS. I. Vakula0O. A. Orlovskaya1L. V. Khotyleva2A. V. Kilchevsky3Institute of Genetics and Cytology, NAS of Belarus.Institute of Genetics and Cytology, NAS of Belarus.Institute of Genetics and Cytology, NAS of Belarus.The National Academy of Sciences of Belarus.As a component of functional nutrition, maize cultivars with “non-traditional” kernel composition (waxy, oilbearing, sugar, opaque, etc. phenotypic variants) are promising. Mutations in the waxy gene, which break down the structure and function of the enzyme for amylose biosynthesis, lead to a waxy (with a high content of amylopectin) endosperm formation. High variability of the waxy gene limits the use of microsatellite loci in marker associated selection of waxy maize genotypes. The increased frequency of gene rearrangements within the waxy locus facilitated the origination of many high-amylopectin corn lines carrying different SSR allelic variants. The purpose of this study was to evaluate the effectiveness of using waxy locus microsatellite sequences for identification and labeling of waxy maize genotypes. To this end, a complex of biochemical (calorimetry, bichromate method), molecular-genetic (SSR-PCR, capillary gel electrophoresis with fluorescent detection of fragments) and statistical (descriptive statistics, cluster analysis, χ2) analysis methods was used. Plant material used were 33 samples of corn kernels including mutant forms with a high content of amylose, amylopectin, short-chain starches, were kindly provided by VIR genetic collection (Russian Federation) and Maize Genetics Cooperation Stock Center (USA). The contents of starch, short-chain soluble carbohydrates, amylose, amylopectin in the grain of 33 maize samples were evaluated. Compositionally similar (to endosperm carbohydrates content) groups of samples were identified. They include 13 high-amylopectin samples carriers of waxy (wx) gene mutations and 20 samples with wild-type character (Wx). Molecular genetic screening of the collection included an analysis of the polymorphism of the microsatellite loci phi022, phi027, phi061 associated with the waxy gene sequence. Allelic composition of individual loci and their combinations were analyzed in relation to the accumulation of reserve carbohydrates in the kernel endosperm. Only the analysis of the phi022/phi027 combination or all three markers in the complex allows differentiating the wild Wx and mutant wx phenotypes of maize. It was shown that not the individual allelic polymorphisms of the phi022, phi027, phi061 loci are efficient for the markerassociated selection of high-amylopectin maize, but their unique combinations.https://vavilov.elpub.ru/jour/article/view/1647maizereserve carbohydratesstarchamylopectinamylosewaxy genemicrosatellite markers |
| spellingShingle | S. I. Vakula O. A. Orlovskaya L. V. Khotyleva A. V. Kilchevsky SSR loci potentially associated with high amylopectine content in maize kernel endosperm Вавиловский журнал генетики и селекции maize reserve carbohydrates starch amylopectin amylose waxy gene microsatellite markers |
| title | SSR loci potentially associated with high amylopectine content in maize kernel endosperm |
| title_full | SSR loci potentially associated with high amylopectine content in maize kernel endosperm |
| title_fullStr | SSR loci potentially associated with high amylopectine content in maize kernel endosperm |
| title_full_unstemmed | SSR loci potentially associated with high amylopectine content in maize kernel endosperm |
| title_short | SSR loci potentially associated with high amylopectine content in maize kernel endosperm |
| title_sort | ssr loci potentially associated with high amylopectine content in maize kernel endosperm |
| topic | maize reserve carbohydrates starch amylopectin amylose waxy gene microsatellite markers |
| url | https://vavilov.elpub.ru/jour/article/view/1647 |
| work_keys_str_mv | AT sivakula ssrlocipotentiallyassociatedwithhighamylopectinecontentinmaizekernelendosperm AT oaorlovskaya ssrlocipotentiallyassociatedwithhighamylopectinecontentinmaizekernelendosperm AT lvkhotyleva ssrlocipotentiallyassociatedwithhighamylopectinecontentinmaizekernelendosperm AT avkilchevsky ssrlocipotentiallyassociatedwithhighamylopectinecontentinmaizekernelendosperm |