Sorghum is the fifth most important grain crop worldwide. It is not only used as food and feed, but also as a resource for biofuel production. In addition, it has potential uses as a model plant for research on adaptation to environmental stress. In this study, mutant sorghum lines were generated by gammy ray irradiation. Ten of the M6 sorghum mutant lines were selected from 28 mutant lines on the basis of agronomic characteristics. These 10 lines, along with their original accessions/cultivar, were evaluated to determine the germination rate and the shoot and root length under salt treatment. Compared with their original accessions, three mutant lines (B5, SY6, and SY7) showed significant differentiation under saline conditions (150 mM NaCl), with increased shoot length (by 1.3-2.2 times) and root length (by 1.5-2.5 times). We determined the transcript levels of 20 abiotic stress-responsive genes in B5 (the most salt-tolerant mutant) and its original accession. These genes included those encoding heat shock proteins, aquaporins, ROS scavenging system, and transcription factors. In the B5 mutant, 15 genes showed differences in transcript levels between the control and the salt treatment. Salt treatment resulted in significant up-regulation of Sb03g045840 and down-regulation of Sb3g030750 in the B5 mutant. Here, we reported a simple method to identify genes related to salt tolerance in a sorghum mutant.
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The leaves of roselle (
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Sweet sorghum (
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The faba bean produces medicinally useful phenolic compounds naturally, and is also a good source of food and animal feed. This study quantified the functional compounds and antioxidant activities of five faba bean genotypes selected on the basis of their seed yield and L-dopa content. The highest total tannin content (TTC) and total proanthocyanidin content (TPAC) were observed in the PI252004 genotype and the lowest content in the PI366039 genotype. The total phenolics content (TPC) and total flavonoid content (TFC) of the PI430715 genotype were higher than those of the other genotypes. LC-MS analyses identified 22 different phenolic compounds in the faba bean genotypes. The most abundant proanthocyanidin compounds were prodelphinidin and catechin and the predominant flavonols and flavones were myricetin, quercetin, apigenin, kaempferol, and luteolin-free aglycones or glycosides. The TFC was correlated with ferric-reducing antioxidant power activity (FRAP) (
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This study involved an evaluation of agronomic characteristics to identify elite faba bean (
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The faba bean, one of the few crops that produces L-3,4-dihydroxy-phenylalanine (L-dopa) naturally, is also a good source of fatty acids and isoflavones. This study analyzed fatty acids, L-dopa and isoflavones in the leaves, immature pods and seeds of selected high-yielding faba bean genotypes spring-sown in Korea. The most abundant fatty acids in the leaves, immature pods and seeds were linolenic acid (58.6–63.7%), linoleic acid (46.9–58.9%), and linoleic acid (45.7–63.6%), respectively. The L-dopa content was highest in the leaf for all the faba bean genotypes except PI430715 and PI614810 where it was highest in the immature pods. The α-linolenic acid and L-dopa contents of the seed and immature pod of the PI430715 and PI614810 genotypes were the highest of all the genotypes. Four isoflavones (daidzin, genistin, daidzein and genistein) were detected with levels of daidzin and genistin generally higher than those of daidzein and genistein in each part of the faba bean. The L-dopa content was correlated (
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