Revisiting maize Brittle endosperm-2 reveals new insights in BETL development and starchy endosperm filling

Wang, Yongyan; Shi, Dongsheng; Zhu, Hai‐Liang; Yin, Hanxue; Wang, Gaoyang; Yang, Anqi; Song, Ziqi; Jing, Qingquan; Shuai, Bilian; Xu, Ningkun; Yang, Jianping; Chen, Hongyu; Wang, Guifeng

doi:10.1016/j.plantsci.2023.111727

Cited by 3 publications

(3 citation statements)

References 49 publications

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“…In the regulatory network of BT2, there are 111 genes (Figure 5C). Notably, the Arabidopsis or rice homologs of GRMZM2G073003, GRMZM2G116314, and GRMZM2G059939 are known to control seed weight [31][32][33], and are corresponding to the role of BT2 in the regulation of seed development in maize [34]. Additionally, two genes, GRMZM2G017536 and GRMZM2G042754, could potentially influence grain yield by controlling biomass traits, as their homologs have been associated with biomass traits (Table S4).…”

Section: Identification Of Candidate Genes and Their Co-expression Ne...mentioning

confidence: 99%

Identification of Allele-Specific Expression Genes Associated with Maize Heterosis

Ma,

Yang,

Zhang

et al. 2023

Agronomy

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Deciphering the molecular basis of heterosis would yield genes and markers for designing improved maize-hybrid varieties. In this study, 481 BC1F3 lines derived from Zheng58 and PH4CV were genotyped with 15,386 polymorphic SNPs markers and testcrossed with two testers (Chang7-2 and PH6WC) to generate 962 testcross lines. The yield of these testcross lines and their parental lines was evaluated across multiple environments. Genetic analysis revealed that dominance is the primary contributor to heterosis. Mapping of midparent heterosis (MPH) identified two dominant QTL, six additive-by-additive interactions, eighteen additive-by-dominance interactions, and fifty-four dominance-by-dominance interactions. These interactions encompassed 104 genetic blocks, including 24 genetic blocks that explained >1% of phenotypic variances for both MPH and hybrid performance. We compared the locations of the allele-specific expression genes (ASEGs) identified from the expression data of two hybrid lines and their parental lines with those of the 24 genetic blocks and found 15 ASEGs related to yield or biomass regulation, including two known genes BT2 and ZmNF-YC4. Fisher’s exact test analysis indicated a significant enrichment of these ASEGs in the 24 blocks, affirming the reliability of the MPH-mapping results. The co-expression network of six ASEGs, including BT2 and ZmNF-YC4, contained many genes related to yield or biomass regulation. This study unravels potential candidate genes and regulatory networks associated with maize heterosis.

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Section: Identification Of Candidate Genes and Their Co-expression Ne...mentioning

confidence: 99%

Identification of Allele-Specific Expression Genes Associated with Maize Heterosis

Ma,

Yang,

Zhang

et al. 2023

Agronomy

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“…SS (mainly sucrose) is the main substance in which carbohydrates in plants can be transformed and reused and is closely related to ST accumulation [10,11]. As temporary storage materials, SS and ST can be redistributed during the grain-filling stage [12]. It has been reported that organic fertilizers can promote carbon metabolism in crop seedlings and increase the NSC content of crops [13].…”

Section: Introductionmentioning

confidence: 99%

“…Fatty acid desaturase inserts double bonds into the hydrocarbon chain to determine the ratio of saturated fatty acids to unsaturated fatty acids and thus the direction of oil use [20]. Some studies have reported that fatty acid desaturase 2 (fad2) and fatty acid desaturase 3 (fad3) are the key enzymes for desaturating oleic acid (18:2, cis-△ 9,12 , OLE) to polyunsaturated fatty acids, namely linoleic acid (18:2, cis-△ 9,12 , LIO) and linolenic acid (18:3, cis -△ 9,12,15 , LIN), respectively [21]. However, currently, research on the effects of organic fertilizer on the accumulation of oil and unsaturated fatty acids in oilseed flax is very limited.…”

Section: Introductionmentioning

confidence: 99%

Effect of Different Types of Organic Manure on Oil and Fatty Acid Accumulation and Desaturase Gene Expression of Oilseed Flax in the Dry Areas of the Loess Plateau of China

Ma,

Gao,

et al. 2024

Agronomy

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In order to understand the mechanism of action of oil and fatty acid accumulation and desaturase gene expression in how oilseed flax responds to different fertilization conditions, a three-factor split-plot experiment was conducted to investigate the accumulation trends of oil and fatty acids. The results revealed that soluble sugar (SS) and sucrose (SUC) contents decreased, and the starch (ST) content increased gradually with the grain development and maturity of oilseed flax. The application of sheep manure promoted the accumulation of nonstructural carbohydrates in the grains. Soluble sugar (SS) and sucrose (SUC) contents were negatively correlated with the oil content. Compared with chemical fertilizer, organic manure decreased the total saturated fatty acid but increased the unsaturated fatty acid. Organic manure significantly upregulated the expression of various genes, and fad2a gene expression was higher with the 5.8 t ha−1 chicken manure treatment. The 25 t ha−1 sheep manure treatment was more conducive to the expression of fad3a and fad3b genes and promoted the accumulation of linolenic acid (LIN), and the LIN content increased by 0.64–3.90% compared with other treatments. Consequently, an ongoing anthropogenic sheep manure input may impact the regulation of grain oil quality and yield per unit area.

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Sucrose-associated SnRK1a1-mediated phosphorylation of Opaque2 modulates endosperm filling in maize

Yang,

Huang,

Liao

et al. 2024

Molecular Plant

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Revisiting maize Brittle endosperm-2 reveals new insights in BETL development and starchy endosperm filling

Cited by 3 publications

References 49 publications

Identification of Allele-Specific Expression Genes Associated with Maize Heterosis

Identification of Allele-Specific Expression Genes Associated with Maize Heterosis

Effect of Different Types of Organic Manure on Oil and Fatty Acid Accumulation and Desaturase Gene Expression of Oilseed Flax in the Dry Areas of the Loess Plateau of China

Sucrose-associated SnRK1a1-mediated phosphorylation of Opaque2 modulates endosperm filling in maize

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