Origin and parental genome characterization of the allotetraploid<i>Stylosanthes scabra</i>Vogel (Papilionoideae, Leguminosae), an important legume pasture crop

Marques, André; Moraes, Lívia de Cássia Godoi; Santos, Maria Aparecida dos; Costa, Iara Ferreira de Rezende; Costa, Lucas; Nunes, Tomáz; Melo, Natoniel Franklin de; Simon, Marcelo F.; Leitch, Andrew R.; Souza, Gustavo

doi:10.1093/aob/mcy113

Cited by 20 publications

(33 citation statements)

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“…Although most of the species of the genus Stylosanthes are diploids, few polyploid species, such as S. hamata and S. scabra with 2n= 40, and S. erecta with 2n=60 were reported (Cameron, 1967;Karia, 2008;Polido et al, 2015). The diploid chromosome number (2n = 2x = 20) here observed is in agreement with previous report for the genus Stylosanthes (Vieira et al, 1993;Lira, 2015;Marques et al, 2018). Mor- 6 Franco et al phometric analysis of the Stylosanthes karyotypes revealed that the chromosomal profile was similar for all diploid species previously investigated (Vieira et al, 1993), corroborating our findings.…”

Section: Karyotype Stability In Stylosanthessupporting

confidence: 93%

“…The number of 5S and 35S rDNA sites was assumed as continuous data. Chromosome data of species were taken from the literature (Marques et al, 2018) or from this work, and they were treated as an unordered, multistate character.…”

Section: Phylogenetic Analysis and Character Reconstructionmentioning

confidence: 99%

“…DNA contents are known for 23 species of Arachis, with an average of 2C = 2.83 pg (http://data.kew.org/cvalues). On the other hand, Stylosanthes karyotype data are extremely scarce, with most data coming from chromosome counting, and few species with genome size and molecular cytogenetics were investigated (Vieira et al, 1993;Chandra and Kaushal, 2009;Lira, 2015;Marques et al, 2018). Most of the species of the genus are diploids (2n = 20) but few polyploid species (2n = 40, 60) were reported (Cameron, 1967;Karia, 2008).…”

Section: Introductionmentioning

confidence: 99%

“…Their chromosomes are small and with similar morphology, making it difficult to recognize chromosome pairs and to interpret the karyotype evolution (Vieira et al, 1993). A recent study based on cytogenetic and genomic data of the allopolyploidy S. scabra (2n = 40) revealed its origin from two diploid progenitors (Marques et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

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Low cytomolecular diversification in the genus Stylosanthes Sw. (Papilionoideae, Leguminosae)

et al. 2020

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Stylosanthes (Papilionoideae, Leguminosae) is a predominantly Neotropical genus with~48 species that include worldwide important forage species. This study presents the chromosome number and morphology of eight species of the genus Stylosanthes (S. acuminata, S. gracilis, S. grandifolia, S. guianensis, S. hippocampoides, S. pilosa, S. macrocephala, and S. ruellioides). In addition, staining with CMA and DAPI, in situ hybridization with 5S and 35S rDNA probes, and estimation of DNA content were performed. The interpretation of Stylosanthes chromosome diversification was anchored by a comparison with the sister genus Arachis and a dated molecular phylogeny based on nuclear and plastid loci. Stylosanthes species showed 2n = 20, with low cytomolecular diversification regarding 5S rDNA, 35S rDNA, and genome size. Arachis has a more ancient diversification (~7 Mya in the Pliocene) than the relatively recent Stylosanthes (~2 Mya in the Pleistocene), and it seems more diverse than its sister lineage. Our data support the idea that the cytomolecular stability of Stylosanthes in relation to Arachis could be a result of its recent origin. The recent diversification of Stylosanthes could also be related to the low morphological differentiation among species, and to the recurrent formation of allopolyploid complexes.

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Section: Karyotype Stability In Stylosanthessupporting

confidence: 93%

Section: Phylogenetic Analysis and Character Reconstructionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Low cytomolecular diversification in the genus Stylosanthes Sw. (Papilionoideae, Leguminosae)

et al. 2020

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“…Stylo (Stylosanthes spp.) is an important forage legume that is widely used in agricultural systems in tropical and subtropical areas, where acid soils are widely distributed [45]. P deficiency, along with Al and manganese (Mn) toxicity, are considered as the major limiting factors for crop growth and production in acid soils [46].…”

Section: Introductionmentioning

confidence: 99%

Metabolic alterations provide insights into Stylosanthes roots responding to phosphorus deficiency

et al. 2020

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Background: Phosphorus (P) deficiency is one of the major constraints limiting plant growth, especially in acid soils. Stylosanthes (stylo) is a pioneer tropical legume with excellent adaptability to low P stress, but its underlying mechanisms remain largely unknown. Results: In this study, the physiological, molecular and metabolic changes in stylo responding to phosphate (Pi) starvation were investigated. Under low P condition, the growth of stylo root was enhanced, which was attributed to the up-regulation of expansin genes participating in root growth. Metabolic profiling analysis showed that a total of 256 metabolites with differential accumulations were identified in stylo roots response to P deficiency, which mainly included flavonoids, sugars, nucleotides, amino acids, phenylpropanoids and phenylamides. P deficiency led to significant reduction in the accumulation of phosphorylated metabolites (e.g., P-containing sugars, nucleotides and cholines), suggesting that internal P utilization was enhanced in stylo roots subjected to low P stress. However, flavonoid metabolites, such as kaempferol, daidzein and their glycoside derivatives, were increased in P-deficient stylo roots. Furthermore, the qRT-PCR analysis showed that a set of genes involved in flavonoids synthesis were found to be up-regulated by Pi starvation in stylo roots. In addition, the abundances of phenolic acids and phenylamides were significantly increased in stylo roots during P deficiency. The increased accumulation of the metabolites in stylo roots, such as flavonoids, phenolic acids and phenylamides, might facilitate P solubilization and cooperate with beneficial microorganisms in rhizosphere, and thus contributing to P acquisition and utilization in stylo. Conclusions: These results suggest that stylo plants cope with P deficiency by modulating root morphology, scavenging internal Pi from phosphorylated metabolites and increasing accumulation of flavonoids, phenolic acids and phenylamides. This study provides valuable insights into the complex responses and adaptive mechanisms of stylo roots to P deficiency.

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Development of transgenic composite Stylosanthes plants to study root growth regulated by a β-expansin gene, SgEXPB1, under phosphorus deficiency

Wang

Miao

et al. 2023

Plant Cell Rep

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Origin and parental genome characterization of the allotetraploidStylosanthes scabraVogel (Papilionoideae, Leguminosae), an important legume pasture crop

Cited by 20 publications

References 89 publications

Low cytomolecular diversification in the genus Stylosanthes Sw. (Papilionoideae, Leguminosae)

Low cytomolecular diversification in the genus Stylosanthes Sw. (Papilionoideae, Leguminosae)

Metabolic alterations provide insights into Stylosanthes roots responding to phosphorus deficiency

Development of transgenic composite Stylosanthes plants to study root growth regulated by a β-expansin gene, SgEXPB1, under phosphorus deficiency

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