Ya-Xi Liu's research while affiliated with Sichuan Agricultural University and other places
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Publications (6)
Synthetic hexaploid wheat (SHW), possesses numerous genes for drought that can help breeding for drought-tolerant wheat varieties. We evaluated 10 root traits at seedling stage in 111 F9 recombinant inbred lines derived from a F2 population of a SHW line (SHW-L1) and a common wheat line, under normal (NC) and polyethylene glycol-simulated drought s...
Uppermost-internode diameter (UID) is a key morphological trait associated with spike development and yield potential in wheat. Our understanding on its genetic basis remains largely unknown. Here, quantitative trait loci (QTLs) for UID with high-density genetic maps were identified in five wheat recombinant inbred line (RIL) populations. In total,...
Starch-branching enzyme I (SBE I) belongs to a member of SBEs isoforms,which plays an important role in amylopectin biosynthesis. In this study, we measured starch content, determined SBE activity within endosperms, analyzed expression patterns of SBE I by real-time quantitative PCR(RT-qPCR), and characterized sequences of SBE I from two accessions...
α-amylases play essential roles in germination, and the malting and brewing processes, by hydrolyzing starch granules present in the endosperm of barley. Hordeum spontaneum, the progenitor of cultivated barley that harbors rich genetic diversity, was collected from seven different environments. To investigate the influence of microclimatic ecologic...
Alphα-amylase enzyme is the important member in physiological metabolism of high plant, especially during seed germination stage. The current study identified 19 amyl genes from 19 hexaploid wheat (Triticum aestivum L.) accessions. The nucleotide and deduced amino acid sequences of amyl genes were analyzed in detail, respectively. It showed that tw...
Citations
... The previously constructed genetic linkage map using the 1978 DArT markers [24] was adopted for QTL analysis. QTL analysis was carried out as described previously [25]. ...
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... Recently, improvements in high-throughput sequencing and genotyping technologies have offered many sequence-based SNP markers with the least cost per sample. Using these SNP platforms, QTL mapping (Atkinson et al. 2015;Kabir et al. 2015) and few marker-traits association (GWAS) studies have been performed to understand the RSA at the genetic level (Ayalew et al. 2018;Beyer et al. 2019;Bhatta et al. 2018;Li et al. 2019;Liu et al. 2019;Liu et al. 2020;Ma et al. 2022). ...
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... The relationship between natural variation in genes related to starch synthesis and its properties has been better established in other species. Transposable elements, insertions and deletions of different lengths, and single nucleotide polymorphisms (SNPs) are correlated to the waxy phenotype in such plant species as rice (Larkin and Park 2003;Kharabian-Masouleh et al. 2012), maize (Xiaoyang et al. 2017), and wheat (Saito and Nakamura 2005;Monari et al. 2005;Zhang et al. 2017). In addition, in crops such as wheat and rice, the dose effect of each allelic form has already been characterized between partial and complete waxy mutants (Yamamori and Quynh 2000;Dobo et al. 2010). ...
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... After several studies have shown a certain level of variation for this gene both using protein separation (Guzmán et al., 2009) and DNA amplification and sequencing (Liu et al., 2009;Ortega et al., 2014;Rodriguez-Quijano et al., 2004). Other enzymes from the amylopectin route have also been analyzed as SGP-1 (Botticella et al., 2018;Yan et al., 2000) or SBE-I (Wang et al., 2015), although in these cases the variation has been significantly lower. For grain hardness, the Pin and Pin-2 genes have been evaluated (Chantret et al., 2004;Gazzelloni et al., 2012;Guzmán et al., 2012a;Taddei et al., 2009). ...
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... Natural microclimatic selection was apparently the major evolutionary driving force causing interslope divergence and adaptive evolution of these genes. Liu et al. ( 2014 ) reported that the genetic variation in amy1-2 and amy2-2 was at least partly ecologically determined in these populations, representing adaptive patterns generated by natural selection. The only likely explanatory model for divergent interslope poly-morphisms at EC I is adaptive natural selection as the major evolutionary divergent driving force (Yang et al. 2009 ;Zhang et al. 2014 ). ...
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