Bridging Classical and Molecular Genetics of Sorghum Plant Stature and Maturity

Brown, Patrick J.; Paterson, Andrew H.

doi:10.1007/978-1-4419-5947-8_14

Cited by 4 publications

(6 citation statements)

References 21 publications

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“…Similarly, Ma2, Ma4, Ma5, and Ma6 have been associated with photoperiod sensitivity in sorghum [53,[56][57][58][59]. Two loci, Ma5 and Ma6, have been reported to enhance photoperiodic sensitivity and prolong the asexual growth period [58,60]. Recently, Ma6 has been cloned and characterized [60].…”

Section: Flowering/maturitymentioning

confidence: 99%

“…Two loci, Ma5 and Ma6, have been reported to enhance photoperiodic sensitivity and prolong the asexual growth period [58,60]. Recently, Ma6 has been cloned and characterized [60]. Ma6 encodes SbGhd7 and functions as a repressor of Early Hibernation Day 1 (SbEHD1) which represses flowering in sorghum during long day light [60].…”

Section: Flowering/maturitymentioning

confidence: 99%

“…Recently, Ma6 has been cloned and characterized [60]. Ma6 encodes SbGhd7 and functions as a repressor of Early Hibernation Day 1 (SbEHD1) which represses flowering in sorghum during long day light [60]. The dominant alleles of these Maturity loci, respectively, contribute to delayed flowering in sorghum under long day conditions [60].…”

Section: Flowering/maturitymentioning

confidence: 99%

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Harnessing the Genetic Basis of Sorghum Biomass-Related Traits to Facilitate Bioenergy Applications

Yang,

Zhou,

Sheng

et al. 2023

IJMS

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The extensive use of fossil fuels and global climate change have raised ever-increasing attention to sustainable development, global food security and the replacement of fossil fuels by renewable energy. Several C4 monocot grasses have excellent photosynthetic ability, stress tolerance and may rapidly produce biomass in marginal lands with low agronomic inputs, thus representing an important source of bioenergy. Among these grasses, Sorghum bicolor has been recognized as not only a promising bioenergy crop but also a research model due to its diploidy, simple genome, genetic diversity and clear orthologous relationship with other grass genomes, allowing sorghum research to be easily translated to other grasses. Although sorghum molecular genetic studies have lagged far behind those of major crops (e.g., rice and maize), recent advances have been made in a number of biomass-related traits to dissect the genetic loci and candidate genes, and to discover the functions of key genes. However, molecular and/or targeted breeding toward biomass-related traits in sorghum have not fully benefited from these pieces of genetic knowledge. Thus, to facilitate the breeding and bioenergy applications of sorghum, this perspective summarizes the bioenergy applications of different types of sorghum and outlines the genetic control of the biomass-related traits, ranging from flowering/maturity, plant height, internode morphological traits and metabolic compositions. In particular, we describe the dynamic changes of carbohydrate metabolism in sorghum internodes and highlight the molecular regulators involved in the different stages of internode carbohydrate metabolism, which affects the bioenergy utilization of sorghum biomass. We argue the way forward is to further enhance our understanding of the genetic mechanisms of these biomass-related traits with new technologies, which will lead to future directions toward tailored designing sorghum biomass traits suitable for different bioenergy applications.

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Section: Flowering/maturitymentioning

confidence: 99%

Section: Flowering/maturitymentioning

confidence: 99%

Section: Flowering/maturitymentioning

confidence: 99%

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Harnessing the Genetic Basis of Sorghum Biomass-Related Traits to Facilitate Bioenergy Applications

Yang,

Zhou,

Sheng

et al. 2023

IJMS

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“…The Ma1 allele leads to a photoperiod response, and the ma1 allele leads to early flowering (Murphy et al, 2011). Ma2 shows complex interaction with Ma1 (Brown & Paterson, 2013): it causes late flowering in the Ma1 background and early flowering in the ma1 background. By quantitative trait locus (QTL) analysis and comparative studies, Ma1 has been identified as PSEUDORESPONSE REGULA-TOR PROTEIN 37 (SbPRR37, Sobic.006G057866; Murphy et al, 2011) and Ma2 as EARLY HEADING DATE 1 (SbEHD1, Sobic.002G203700; Casto et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

DNA marker analysis of flowering time, semi‐dwarf, fertility restorer, and brown midrib genes in sorghum (Sorghum bicolor [L.] Moench)

et al. 2021

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DNA markers for the genes for flowering time (Ma1/SbPRR37, Ma2/SbEHD1, Ma3/SbPhyB, Ma4/SbCO, Ma5/SbPhyC, and Ma6/SbGHD7), semi‐dwarfism (dw1 and dw2), fertility restorers (Rf1, Rf2, Rf5, and partial A1 mitochondrial sequence) and cytoplasmic–nuclear male sterile (CMS), and brown midrib (bmr‐2, bmr‐6, and bmr‐18) were developed in this study. These markers and previously published DNA markers for dw3 were used to analyze sorghum cultivars used in breeding programs in Japan and traditional landraces from the National Institute of Agricultural Sciences (NIAS) sorghum core collection. Agronomically useful mutations were effectively detected in the cultivars by the DNA markers. Most of the mutation types for flowering and semi‐dwarfism were detected in sorghum cultivars, but only the dominant‐type allele of SbEHD1 and SbPhyB for flowering was detected in the NIAS collection. Fertility restorers and CMS were rarely detected in NIAS collection. Agronomically useful traits such as early flowering and semi‐dwarfism became combined in the modern cultivars by phenotypic evaluation for the adaptation of harvesting to the temperate zones. Fertility restorers and CMS were introduced for F1 hybrid breeding. These phenotypes are often recessive, so information on the alleles responsible would be helpful for sorghum breeding. We expect these DNA markers to facilitate and improve the efficiency of F1 sorghum breeding programs.

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“…Few more maturity loci have also been reported in sorghum, e.g., Ma2, Ma4, Ma5, and Ma6, with very little information about their functions. Ma2 is unmapped and shows interaction with Ma1 [51], while Ma4 is thought to be on chromosome 10 [26]. For the production of photosensitive hybrids from two plants, the Ma5-Ma6 interaction has been extensively used by the biomass sorghum seed industry.…”

Section: Qtl Mapping Of Quantitative Traits In Sorghummentioning

confidence: 99%

Genetic Improvement of Sorghum for Biomass Traits Using Genomics Approaches

Sadia¹,

Awan²,

Saleem³

et al. 2018

Advances in Biofuels and Bioenergy

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Nonrenewable energy resources deplete with the passage of time due to rapid increase in industrialization and population. Hence, countries worldwide are investing dearly in substitute energy resources like biofuel from miscellaneous set of feedstocks. Among the energy crops, sorghum serves as a model crop due to its drought tolerance, small genome size (730 Mb), high biomass, dry matter contents, quick growth, wide adaptability to diverse climatic and soil conditions and C4 photosynthesis. Sweet sorghum with high sugar content in stalk is an efficient feedstock for advanced biofuels and other bio-based products from sugars.However, high biomass sorghum has the utility as a feedstock for cellulosic biofuels. The enhanced yield of monomeric carbohydrates is a key to cheap and efficient biofuel production. The efficiency of lignocellulosic biofuels is compromised by recalcitrance to cell wall digestion, a trait that cannot be efficiently improved by traditional breeding. Therefore, scientists are looking for solutions to such problems in biomass crop genomes. Sorghum genome has been completely sequenced and hence this crop qualifies for functional genomics analysis by fast forward genetic approaches. This chapter documents the latest efforts on advancement of sorghum for biomass potential at morphological and molecular level by exploiting genomics approaches.

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Bridging Classical and Molecular Genetics of Sorghum Plant Stature and Maturity

Cited by 4 publications

References 21 publications

Harnessing the Genetic Basis of Sorghum Biomass-Related Traits to Facilitate Bioenergy Applications

Harnessing the Genetic Basis of Sorghum Biomass-Related Traits to Facilitate Bioenergy Applications

DNA marker analysis of flowering time, semi‐dwarf, fertility restorer, and brown midrib genes in sorghum (Sorghum bicolor [L.] Moench)

Genetic Improvement of Sorghum for Biomass Traits Using Genomics Approaches

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