Abiotic stress and self-destruction: ZmATG8 and ZmATG12 gene transcription and osmotic stress responses in maize

Tejeda, Luis Herminio Chairez; Viana, Vívian Ebeling; Maltzahn, Latóia Eduarda; Busanello, Carlos; Barros, Lílian Moreira; Maia, Luciano Carlos da; Oliveira, Antônio Costa de; Pegoraro, Camila

doi:10.1016/j.biori.2019.12.001

Cited by 5 publications

(4 citation statements)

References 32 publications

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“…Each seedling was cut at the junction between root and shoot for the dry mass weight, and the tissues were dried in an air forced oven at 70 °C, until reaching constant weight, then were weighed using a precision scale (Marte ® ). Considering that the studied genotypes present intrinsic developmental characteristics, results were transformed in relative performance (RP), dividing the value in the stress condition by the value obtained in the control condition (TEJEDA et al 2020).…”

Section: Methodsmentioning

confidence: 99%

Characterization of rice genotypes used in Brazil regarding salinity tolerance at the seedling stage

Oliveira

Maltzahn

Viana

et al. 2022

Rev. Ciênc. Agrovet.

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Rice production (Oryza sativa L.) is among the most economically important activities in the world. However, soil and salinity coming from irrigation water reduce rice yield. Therefore, the identification and/or development of salt-tolerant rice genotypes is a strategy to minimize this problem. The development of new genotypes depends on the presence of genetic diversity, and understanding the heritability of a desired trait can help in the selection process. Thus, this study aimed to identify superior genotypes, analyze the genetic diversity and estimate the heritability for salinity tolerance at the seedling stage in rice genotypes used in Brazil. For this, seedlings of 69 genotypes were kept in hydroponic solution with 40 mM NaCl (4 dSm-1) for seven days. Shoot length, root length, shoot dry weight, and root dry weight) were evaluated and the results were converted into relative performance. Tolerant and moderately salt-tolerant genotypes were identified at the seedling stage, which can be used in breeding programs and can be cultivated in high salinity areas. Principal component analysis showed the presence of genetic diversity for salinity response. Finally, it was shown that most of the observed variation is of genetic origin, which can make the breeding process less difficult.

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Section: Methodsmentioning

confidence: 99%

Characterization of rice genotypes used in Brazil regarding salinity tolerance at the seedling stage

Oliveira

Maltzahn

Viana

et al. 2022

Rev. Ciênc. Agrovet.

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“…Similarly, several ectopic expressions of genes such as AtNHX1 and NPK1 were found to regulate transporters, ion channels, and oxidative signaling in response to salinity cold, heat, and salinity tolerance (Yin et al, 2004;Lin et al, 2014). Tejeda et al (2019) characterized autophagy-related genes (ATG genes; ZmATG8 and ZmATG12) in maize landraces under osmotic stress and found them potential targets for functional characterization and development of osmotic-tolerant maize genotypes using molecular breeding strategies (Table 1).…”

Section: Role Of Transcription Factors Cis-elements and Signal Transd...mentioning

confidence: 99%

Recent developments in multi-omics and breeding strategies for abiotic stress tolerance in maize (Zea mays L.)

et al. 2022

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High-throughput sequencing technologies (HSTs) have revolutionized crop breeding. The advent of these technologies has enabled the identification of beneficial quantitative trait loci (QTL), genes, and alleles for crop improvement. Climate change have made a significant effect on the global maize yield. To date, the well-known omic approaches such as genomics, transcriptomics, proteomics, and metabolomics are being incorporated in maize breeding studies. These approaches have identified novel biological markers that are being utilized for maize improvement against various abiotic stresses. This review discusses the current information on the morpho-physiological and molecular mechanism of abiotic stress tolerance in maize. The utilization of omics approaches to improve abiotic stress tolerance in maize is highlighted. As compared to single approach, the integration of multi-omics offers a great potential in addressing the challenges of abiotic stresses of maize productivity.

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“…Maize landraces L25, L14, L1, and L3, are reported as the most valuable source of drought tolerance [62]. A higher transcript accumulation in shoot tissues of ZmATG genes reported in landrace 'Argentino Amarelo' under the osmotic stress conditions compared to landrace 'Taquarão' [63]. Nelimor et al [64] identified extra-early maize landraces that express tolerance to drought and heat stress.…”

Section: Tolerance To Abiotic Stressesmentioning

confidence: 99%

Wild Progenitor and Landraces Led Genetic Gain in the Modern-Day Maize (Zea mays L.)

Sharma¹,

Khulbe²,

Pal³

et al. 2021

Landraces - Traditional Variety and Natural Breed

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Maize (Zea mays ssp. mays) originated from Mexico and Central America and grew worldwide for food, feed and industrial products components. It possesses ten chromosomes with a genome size of 2.3 gigabases. Teosinte (Z. mays ssp. parviglumis) is the probable progenitor of the modern-day maize. The maize domestication favored standing gain of function and regulatory variations acquired the convergent phenotypes. The genomic loci teosinte branched 1 (tb1) and teosinte glume architecture 1 (tga1) played a central role in transforming teosinte to modern-day maize. Under domestication and crop improvement, only 2% (~1200) genes were undergone selection, out of ~60000 genes. Around ~98% of the genes have not experienced selection; there is enormous variation present in the diverse inbred lines that can be potentially utilized to identify QTLs and crop improvement through plant breeding. The genomic resources of wild relatives and landraces harbor the unexplored genes/alleles for biotic/abiotic tolerance, productivity and nutritional quality. The human-made evolution led to the transformation of wild relatives/landraces to the modern-day maize. This chapter summarized the maize’s wild relatives/landraces and the genetic gain over time in biotic/abiotic, productivity, and nutritional quality traits.

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Abiotic stress and self-destruction: ZmATG8 and ZmATG12 gene transcription and osmotic stress responses in maize

Cited by 5 publications

References 32 publications

Characterization of rice genotypes used in Brazil regarding salinity tolerance at the seedling stage

Characterization of rice genotypes used in Brazil regarding salinity tolerance at the seedling stage

Recent developments in multi-omics and breeding strategies for abiotic stress tolerance in maize (Zea mays L.)

Wild Progenitor and Landraces Led Genetic Gain in the Modern-Day Maize (Zea mays L.)

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