Genome-Wide Association Study Identified Novel SNPs Associated with Chlorophyll Content in Maize

Jin, Yueting; Li, Dan; Liu, Meiling; Cui, Zhenhai; Sun, Daqiu; Li, Cong; Zhang, Ao; Cao, Huiying; Ruan, Yijun

doi:10.3390/genes14051010

Cited by 5 publications

(2 citation statements)

References 81 publications

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“…The presence of RKNs not only affects the external appearance of plants but also disrupts essential physiological metabolic functions like photosynthesis [ 12 ]. The chlorophyll content is an essential indicator of photosynthesis in plants, as it serves as the major channel by which plants acquire energy for their metabolic processes and development [ 13 ]. Furthermore, it should be noted that chlorophyll content is particularly sensitive to biotic stresses [ 14 ].…”

Section: Introductionmentioning

confidence: 99%

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Growth, Physiological, and Biochemical Variations in Tomatoes after Infection with Different Density Levels of Meloidogyne enterolobii

Sikandar,

Wu,

et al. 2024

Plants

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Meloidogyne enterolobii is an extremely important plant parasitic nematode. Tomato (Solanum lycopersicum) is an essential worldwide vegetable, and M. enterolobii poses a major threat to its production. The present research investigated the effects of different levels of inoculum density of M. enterolobii (100, 500, 1000, 1500, and 2000 second-stage juveniles (J2s)/plant) on tomato growth, physiological, and biochemical changes at 7, 14, 21, and 28 days post-inoculation (dpi). The negative impact of M. enterolobii on plants gradually increased when the inoculum level increased. Therefore, M. enterolobii population densities (500–2000 J2s/plant) significantly (p < 0.05) reduced plant growth, photosynthetic pigmentation, gas exchange, and chlorophyll fluorescence compared to control plants, while the low population density (100 J2s/plant) showed very little influence. Furthermore, plants with the highest M. enterolobii inoculum (2000 J2s/plant) exhibited a greater number of egg masses and galls. The inoculum densities of M. enterolobii exhibited a notable correlation with the significant elevation of both malondialdehyde (MDA) and hydrogen peroxide (H2O2) levels, which are recognized as very detrimental stresses in plants. Similarly, a rise in the activity of several defensive antioxidant enzymes, namely superoxide dismutase (SOD), catalase (CAT), and peroxidase (POD), indicates the defensive mechanism used to combat the oxidative destruction produced by M. enterolobii. The specific activity of glutathione (GSH) and ascorbate (ASA) increased as potent antioxidant defense molecules in response to induced oxidative damage. In addition, our findings also demonstrated that the highest population density (2000 J2s/plant) increased the secondary metabolites responsible for scavenging oxidative stress in the plants. However, further research is required to explore the underlying reasons for this phenomenon and to develop efficient chemical or biocontrol strategies for managing M. enterolobii.

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Section: Introductionmentioning

confidence: 99%

“…Plants 2024,13, x FOR PEER REVIEW 7 of 21 with 2000 J2s per plant decreased the most significantly. At 7, 14, 21, and 28 dpi, the GTC values in 2000 J2s-inoculated plants showed a remarkable reduction to 86.948%, 54.63%, 53.61%, and 51.35%, respectively, in comparison with the control plants.…”

mentioning

confidence: 99%

Growth, Physiological, and Biochemical Variations in Tomatoes after Infection with Different Density Levels of Meloidogyne enterolobii

Sikandar,

Wu,

et al. 2024

Plants

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UV-B-Priming Combined with the Soil Application of MWCNT Enhances Rice Growth Performance Under Salt Stress

Ji,

Wang,

Wang

et al. 2024

J Plant Growth Regul

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GWAS-Based Prediction of Genes Regulating the Weight of Mobilized Reserved Seeds in Sweet Corn

Yu,

Rizwan,

Sun

et al. 2024

Agronomy

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Seed reserve mobilization is a crucial physiological process during seed germination. Enhancing the reserve mobilization in sweet corn is vital for seed germination and seedling growth. In this study, a genome-wide association analysis (GWAS) was conducted to predict candidate genes for regulating the weight of mobilized reserved seeds (WMRS) and kernel weight (KW) in sweet corn. GWAS was performed using the BLINK model with the maize 56K SNP chip. The results indicated that there was a positive correlation between the WMRS and KW, with coefficients of variation of 68.18% and 44.63%. Association analysis identified thirteen SNPs associated with two traits, and linkage disequilibrium analysis revealed that eight of these SNPs were in strong linkage. A total of 298 candidate genes were identified within the confidence interval, of which 79 were annotated. About 20 candidate genes were identified through the comparison of homologous genes in Arabidopsis. These genes were enriched in regulating ribosome biogenesis, signal transduction, hormone synthesis, and RNA degradation processes. This study provides important insights into the genetic mechanisms governing germination traits in sweet corn, aiding further research into the localization and cloning of genes involved in the mobilization of reserve materials.

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Genome-Wide Association Study Identified Novel SNPs Associated with Chlorophyll Content in Maize

Cited by 5 publications

References 81 publications

Growth, Physiological, and Biochemical Variations in Tomatoes after Infection with Different Density Levels of Meloidogyne enterolobii

Growth, Physiological, and Biochemical Variations in Tomatoes after Infection with Different Density Levels of Meloidogyne enterolobii

UV-B-Priming Combined with the Soil Application of MWCNT Enhances Rice Growth Performance Under Salt Stress

GWAS-Based Prediction of Genes Regulating the Weight of Mobilized Reserved Seeds in Sweet Corn

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