Inheritance of Reverse Margo Seedcoat Pattern and Allelism between the Genes J for Seedcoat Color and L for Partly Colored Seedcoat Pattern in Common Bean

Bassett, Mark J.; Lee, Rian; Symanietz, Tim; McClean, Phillip E.

doi:10.21273/jashs.127.1.56

Cited by 13 publications

(11 citation statements)

References 20 publications

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“…Patterned seeds require a t/t genotype for expression of a partial color, whereas a T/- genotype gives seeds that are totally colored. The types (form and extension) of colored patterns are then controlled by the interaction of the t gene with the two previously mentioned Z gene for patterned color expression on the testa, plus the genes L ( limiter ) and J ( joker ) which were found to be allelic to each other (Bassett, 1994, 2002, 2007). Finally, the Z gene is allelic with the D gene, which specifically determines hilum color (Bassett, 1999).…”

Section: Development and Accumulation Of Main Components Of The Testamentioning

confidence: 99%

The role of the testa during development and in establishment of dormancy of the legume seed

et al. 2014

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Timing of seed germination is one of the key steps in plant life cycles. It determines the beginning of plant growth in natural or agricultural ecosystems. In the wild, many seeds exhibit dormancy and will only germinate after exposure to certain environmental conditions. In contrast, crop seeds germinate as soon as they are imbibed usually at planting time. These domestication-triggered changes represent adaptations to cultivation and human harvesting. Germination is one of the common sets of traits recorded in different crops and termed the “domestication syndrome.” Moreover, legume seed imbibition has a crucial role in cooking properties. Different seed dormancy classes exist among plant species. Physical dormancy (often called hardseededness), as found in legumes, involves the development of a water-impermeable seed coat, caused by the presence of phenolics- and suberin-impregnated layers of palisade cells. The dormancy release mechanism primarily involves seed responses to temperature changes in the habitat, resulting in testa permeability to water. The underlying genetic controls in legumes have not been identified yet. However, positive correlation was shown between phenolics content (e.g., pigmentation), the requirement for oxidation and the activity of catechol oxidase in relation to pea seed dormancy, while epicatechin levels showed a significant positive correlation with soybean hardseededness. myeloblastosis family of transcription factors, WD40 proteins and enzymes of the anthocyanin biosynthesis pathway were involved in seed testa color in soybean, pea and Medicago, but were not tested directly in relation to seed dormancy. These phenolic compounds play important roles in defense against pathogens, as well as affecting the nutritional quality of products, and because of their health benefits, they are of industrial and medicinal interest. In this review, we discuss the role of the testa in mediating legume seed germination, with a focus on structural and chemical aspects.

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Section: Development and Accumulation Of Main Components Of The Testamentioning

confidence: 99%

The role of the testa during development and in establishment of dormancy of the legume seed

et al. 2014

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“…This laborious procedure is justified by the especially complex epistatic interactions of several systems of marker genes controlling color and pattern in flowers, pods, seed coats, and other organs in common bean. With respect to the genes controlling partly colored seed-coat expression, the genotype of 5-593 is T Z J Bip (Bassett, 1998a;Bassett et al, 2002). The genes controlling the black seed-coat color of 5-593 are P [C r] J G B V Rk (Bassett, 1998a).…”

Section: Methodsmentioning

confidence: 99%

“…The L and l ers alleles at the L locus produce a complicated series of partly colored seed-coat patterns or completely white seed coats when interacting with the Z locus (Bassett, 1997;Schreiber, 1940). Subsequently, Bassett et al (2002) found that the L locus is a synonym for J. The l gene of Schreiber (1940) is a direct synonym for J, and l ers was renamed j ers .…”

Section: Introductionmentioning

confidence: 99%

“…Color expression in both the seed coat and flower is completely lost when only the recessive p allele is homozygous. T, though, requires epistatic interaction with two other genes (Z and J) to completely eliminate color in seed coats (Bassett et al, 2002). In this manner, the P product could have direct effect on pathway genes, whereas T acts as a member of a complex that regulates the pathway.…”

Section: Introductionmentioning

confidence: 99%

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Inheritance of the virgata pattern of partly colored seed coats in ‘Early Giant’ common bean

Bassett

2005

Euphytica

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The inheritance of the virgata pattern of partly colored seed coats found in common bean (Phaseolus vulgaris L.) 'Early Giant' (EG) was studied by a series of test crosses with line 5-593 and genetic stocks developed by backcrossing selected genes into the recurrent parent 5-593, a Florida dry bean breeding line with a self-colored, black seed coat with genotype T Z Bip P [C r] J G B V Rk. Analysis of the F 2 from the cross EG × 5-593 led to the hypothesis that the virgata pattern of EG has genotype t z bip vgt , where vgt stands for virgata. The test cross EG × t z virgarcus BC 3 5-593 confirmed the hypothesis that EG carries t z from data recorded in F 1 , F 2 , and 27 F 3 progenies from randomly selected F 2 plants. The F 3 segregation was also consistent with the hypothesis that a single recessive gene converts virgarcus into virgata. The test cross EG × t z bip bipunctata BC 3 5-593 failed to show genetic complementation in F 1 progeny, and the F 2 segregated 3:1 for the parental phenotypes virgata and bipunctata, respectively. Including previously published data, all possible crosses were made among bipunctata, virgata, and virgarcus parents, supporting a multiple allelic series at Bip. We propose the gene symbol bip vgt for the new allele at Bip, where the allelic series has the order of gene dominance Bip > bip vgt > bip. Based on test crosses, the complete seed-coat color and pattern genotype of EG is tz bip vgt P [C r] J G B v lae rk d .

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“…Color in P. vulgaris is controlled by eight genes with complex epistatic interactions (Bassett, 2002;Praken, 1972). The pp genotype at the P locus is universally used to create white-seeded beans.…”

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confidence: 99%

Evaluation of Common Bean Accessions for Resistance to Pythium ultimum

Lucas¹,

Griffiths²

2004

HortSci

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Common bean accessions were evaluated to identify white-or light-seeded beans with resistance to Pythium ultimum Trow. In total, 568 common bean (Phaseolus vulgaris L.) accessions were inoculated with a hyphal suspension of P. ultimum under greenhouse conditions. The bean accessions included represented the Andean-Middle American core collections (406 accessions) and 162 additional white-or cream-seeded accessions. The accessions were categorized into 12 groups according to seedcoat color. Accessions with light seedcoats exhibited higher levels of disease symptoms, with white-seeded bean accessions being the most susceptible class. No symptomless white-seeded accessions were identifi ed. The most resistant white-seeded accessions were PI 430207, PI 527803, PI 290996, PI 299021, PI 194574, and PI 304110. Cream-seeded beans exhibited higher levels of resistance, with nine accessions rated as symptomless out of 188 cream and white accessions tested. Of 568 accessions, 48 tested were symptomless, whereas disease ratings of the other accessions ranged from resistant to highly susceptible.

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Inheritance of Reverse Margo Seedcoat Pattern and Allelism between the Genes J for Seedcoat Color and L for Partly Colored Seedcoat Pattern in Common Bean

Cited by 13 publications

References 20 publications

The role of the testa during development and in establishment of dormancy of the legume seed

The role of the testa during development and in establishment of dormancy of the legume seed

Inheritance of the virgata pattern of partly colored seed coats in ‘Early Giant’ common bean

Evaluation of Common Bean Accessions for Resistance to Pythium ultimum

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