Biochemical and molecular characterization of sub-tropical maize germplasm for tocopherols

Devgan, Manik; Gill, Gurjit Kaur; Praba, Umesh Preethi; Singh, Gagandeep; Garg, Tosh; Karnatam, Krishna Sai; Kaur, Amandeep; Vikal, Yogesh

doi:10.1016/j.jfca.2022.104842

Cited by 2 publications

(2 citation statements)

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“…Mostly, these gene families coincided with the CGs mined within the hcMQTL regions in the present study. These MQTLs are promising and could be used for effective MAS for maize root traits [ 73 , 74 ].…”

Section: Discussionmentioning

confidence: 99%

Genome-Wide Meta-Analysis of QTLs Associated with Root Traits and Implications for Maize Breeding

Karnatam

Chhabra

Saini

et al. 2023

IJMS

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Root system architecture (RSA), also known as root morphology, is critical in plant acquisition of soil resources, plant growth, and yield formation. Many QTLs associated with RSA or root traits in maize have been identified using several bi-parental populations, particularly in response to various environmental factors. In the present study, a meta-analysis of QTLs associated with root traits was performed in maize using 917 QTLs retrieved from 43 mapping studies published from 1998 to 2020. A total of 631 QTLs were projected onto a consensus map involving 19,714 markers, which led to the prediction of 68 meta-QTLs (MQTLs). Among these 68 MQTLs, 36 MQTLs were validated with the marker-trait associations available from previous genome-wide association studies for root traits. The use of comparative genomics approaches revealed several gene models conserved among the maize, sorghum, and rice genomes. Among the conserved genomic regions, the ortho-MQTL analysis uncovered 20 maize MQTLs syntenic to 27 rice MQTLs for root traits. Functional analysis of some high-confidence MQTL regions revealed 442 gene models, which were then subjected to in silico expression analysis, yielding 235 gene models with significant expression in various tissues. Furthermore, 16 known genes viz., DXS2, PHT, RTP1, TUA4, YUC3, YUC6, RTCS1, NSA1, EIN2, NHX1, CPPS4, BIGE1, RCP1, SKUS13, YUC5, and AW330564 associated with various root traits were present within or near the MQTL regions. These results could aid in QTL cloning and pyramiding in developing new maize varieties with specific root architecture for proper plant growth and development under optimum and abiotic stress conditions.

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Section: Discussionmentioning

confidence: 99%

Genome-Wide Meta-Analysis of QTLs Associated with Root Traits and Implications for Maize Breeding

Karnatam

Chhabra

Saini

et al. 2023

IJMS

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“…Maize grain, taking in account various types (standard, sweet, popcorn) has the highest carotenoid content (lutein, zeaxanthin, β -carotene, and β -cryptoxanthin) of all cereals, especially in lutein and zeaxanthin which have a protective role in ocular tissue. Antioxidants such as tocopherols ( α -, β -, γ -, δ -), glutathione (GSH), and phytic acid (Pphy), also found in all types of maize, have health-promoting roles, acting as antioxidants and protectors of biological membranes [ 5 , 6 , 7 , 8 ]. Although phytic acid acts as an antinutrient because it restrains the bioavailability of mineral elements in humans and non-ruminant animals [ 9 ], its benefits for health are numerous, from the anti-carcinogenic and anti-inflammatory, to a protective role against diabetes, cardio-vascular diseases, Alzheimer’s, and Parkinson’s disease [ 10 ].…”

Section: Introductionmentioning

confidence: 99%

Assessment of Popcorn’s Bioactive Status in Response to Popping

Vukadinović,

Srdić,

Kravić

et al. 2024

Molecules

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Popcorn is a specialty maize variety with popping abilities. Although considered a snack, popcorn flakes provide a variety of benefits for the human diet. To evaluate the change in content of bioactive compounds in response to microwave popping, the kernels and flakes of twelve popcorn hybrids were assayed. Accordingly, the content of phytic acid, glutathione, phenolic compounds, carotenoids, and tocopherols, as well as the antioxidant activity, were evaluated. In all evaluated popcorn hybrids, the most pronounced significant average decrease of 71.94% was observed for GSH content, followed by 57.72% and 16.12% decreases for lutein + zeaxanthin and phytic acid content, respectively. In response to popping, in the majority of the evaluated hybrids, the most pronounced significant average changes of a 63.42% increase and a 27.61% decrease were observed for DPPH, followed by a 51.52% increase and a 24.48% decrease for β-carotene, as well as, a 48.62% increase and a 16.71% decrease for α-Tocopherol content, respectively. The applied principal component and hierarchical cluster analyses revealed the distinct separation of popcorn hybrids’ kernels and flakes, indicating the existence of a unique linkage of changes in bioactive compound content in response to popping.

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Biochemical and molecular characterization of sub-tropical maize germplasm for tocopherols

Cited by 2 publications

References 50 publications

Genome-Wide Meta-Analysis of QTLs Associated with Root Traits and Implications for Maize Breeding

Genome-Wide Meta-Analysis of QTLs Associated with Root Traits and Implications for Maize Breeding

Assessment of Popcorn’s Bioactive Status in Response to Popping

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