Linkage map of Arabidopsis thaliana

Koornneef, M.; Eden, J. van; Hanhart, C.J.; Stam, P.; Braaksma, F. J.; Feenstra, W.J.

doi:10.1093/oxfordjournals.jhered.a109781

Cited by 475 publications

(436 citation statements)

References 18 publications

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“…Stocks with marked chromosome 1 (an'alb1'dis1 and chl'clvl'apl), 2 (as'hyl'er+, as'cer8'cp2 and py'hy3), 3 (hy2'gll), 4 (cp3'cer4'fca and ap2'cer2) and 5 (ttg'lu and yi'hys) were used (for description see Koornneef et al, 1983). Sex difference in rf was determined on the basis of reciprocal crosses of Fl with multiple-marker tester.…”

Section: Methodsmentioning

confidence: 99%

“…Then the significance of the difference rf -rf? can readily be calculated assuming the asymptotic normality of ML-estimates: The effect of sex on recombination in Arabidopsis can be indirectly deduced from data of Koornneef et al (1983). In this paper the direction of test crosses was not indicated, so it is possible to state only the fact of sex differences without their relating to the particular sex.…”

Section: Methodsmentioning

confidence: 99%

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Sex difference in recombination frequency in Arabidopsis

Vizir¹,

Korol²

1990

Heredity

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Sex differences for rf have been studied in all five chromosomes of the Arabidopsis genome. These differences are strongly segment-specific: in some cases the level of crossing over in male and female meiosis was about the same, though for the majority of segments the rfd is significantly higher than rf9. The data are discussed in the light of the hypothesis about the possible mechanisms of plant sex differences for recombination. The necessity of taking into account the rf sex differences in recombination experiments is called for by the fact that male and female meiocytes can react differentially to the same factor.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Sex difference in recombination frequency in Arabidopsis

Vizir¹,

Korol²

1990

Heredity

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“…In correlative control models for monocarpic senescence, it is hypothesized that signals or processes associated with inflorescence andlor fruit development are responsible for the induction of the senescence syndrome in leaves (reviewed in Noodén, 1988b). To investigate the relationship between reproductive development and senescence in Arabidopsis, somatic tissue senescence was first compared between the wild-type Ler strain and ms7-7, a male-sterile mutant line in the Ler background (Koornneef et al, 1983). As shown in Figure 2, the absence of fruit development in the msl-7 line did not appreciably affect the timing of Senescence of either leaf or inflorescence stem tissue.…”

Section: Relationship Between Reproduction and Somatic Tissue Senescencementioning

confidence: 99%

Developmental and age-related processes that influence the longevity and senescence of photosynthetic tissues in arabidopsis.

et al. 1993

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Factors that influence the longevity and senescence of photosynthetic tissues of Arabidopsis were investigated. To determine the influence of reproductive development on the timing of somatic tissue senescence, the longevity of rosette leaves of the Landsberg efecta strain and of isogenic mutant lines in which flowering is delayed (co-2) or sterile flowers are produced (ms7-7) were compared. No difference in the timing of senescence of individual leaves was observed between these lines, indicating that somatic tissue longevity is not governed by reproductive development in this species. To examine the role of differential gene expression in the process of leaf senescence, cDNA clones representing genes that are differentially expressed in senescing tissues were ísolated. Sequence analysis of one such clone indicated homology to previously cloned cysteine proteinases, which is consistent with a role for the product of this gene in nitrogen salvage. RNA gel blot analysis revealed that increased expression of senescence-associated genes is preceded by declines in photosynthesis and in the expression of photosynthesis-associated genes. A model is presented in which it is postulated that leaf senescence is triggered by age-related declines in photosynthetic processes.

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“…All bell alleles were recessive to wild type, indicating that they probably represent loss-of-function mutations. Linkage of bell to ttg was deduced from segregation ratios in 246 F2 progeny plants derived from crosses with strains having multiple markers (19) using the MAP-MAKER computer program (20). Mapping relative to RFLP (restriction fragment length polymorphism) (21) was performed on F2 progeny (96 chromosomes analyzed) from a bell-l/bell-l Ler x Co-3 cross.…”

mentioning

confidence: 99%

Arabidopsis floral homeotic gene BELL (BEL1) controls ovule development through negative regulation of AGAMOUS gene (AG).

Ray

Robinson-Beers²,

Ray³

et al. 1994

Proc. Natl. Acad. Sci. U.S.A.

121

104

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Ovules are the developmental precursors of seeds. In angiosperms the ovules are enclosed within the central floral organs, the carpels. We have identified a homeotic mutation in Arabidopsis, "bell" (bell), which causes transormation of ovule integuments into carpels. In situ hybridization analysis shows that this mutation leads to increased expression of the carpel-determining homeotic gene AGAMOUS (AG) A typical angiosperm flower includes four major organ types-sepals, petals, stamens, and carpels. The carpels include an additional set of distinct internal structures, the ovules. As the precursors of seeds, ovules play an essential role in higher plant sexual reproduction. Ovules are also found in gymnosperms, which lack carpels, and fossil evidence of angiosperm ancestors demonstrates that ovules precede the evolution of carpels (1-3). Thus, ovules evolved first, with subsequent evolution ofthe enclosing carpel. From this perspective, ovules can be viewed as separate floral organs, which, in angiosperms, develop from and are enclosed within the carpels.Little is known concerning the genetic control of determination and differentiation of ovules. This contrasts with recent progress in elucidation of control of development of other floral organs, where analysis offloral homeotic mutants in Arabidopsis thaliana and Antirrhinum majus has led to the formulation of two similar models for genetic determination of the identity of the four major floral organs (4-8). In Arabidopsis, at least five genes-APETALA1 (API), AP-ETALA2 (AP2), APETALA3 (AP3), PISTILLATA (PI), and AGAMOUS (AG)-are responsible for this determination (5,(8)(9)(10)(11). Several of these genes have now been cloned and found to be homologous to known transcription factors identified in yeast and mammals (12)(13)(14)(15). One of these genes, AG, important for carpel identity (5,8,16), is also potentially involved in ovule development. The expression ofAG occurs both early and late in flower development (16 (20). Mapping relative to RFLP (restriction fragment length polymorphism) (21) was performed on F2 progeny (96 chromosomes analyzed) from a bell-l/bell-l Ler x Co-3 cross. RFLP probes were M247 (Bgl II digestions) and g4028 (HindIII digestions). To determine the frequency ofintegument-to-carpel transformation in different alleles, ovules in >150 pistils from at least three different plants for each allele were scored for carpelloid features.Microscopy and in Situ Hybridization. Scanning electron microscopy was performed as described (17). In situ hybridization was carried out as described earlier (22 (16) were treated in the same experiment. Only exposures providing subsaturated grains were counted. For wild-type ovules, the area delimited by the endothelium and the embryo sac was not counted. The mean grain surface density (+SD) before background correction in the integument area on sections of wild-type ovules probed with anti-AG was 0.029 (±0.007) (10 ovules counted), and that for bell-i ovules with the same probe was 0.076 (+0.046) (13 ...

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Linkage map of Arabidopsis thaliana

Cited by 475 publications

References 18 publications

Sex difference in recombination frequency in Arabidopsis

Sex difference in recombination frequency in Arabidopsis

Developmental and age-related processes that influence the longevity and senescence of photosynthetic tissues in arabidopsis.

Arabidopsis floral homeotic gene BELL (BEL1) controls ovule development through negative regulation of AGAMOUS gene (AG).

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