Gailing, Oliver

[["dc.bibliographiccitation.firstpage","1"],["dc.bibliographiccitation.issue","1-4"],["dc.bibliographiccitation.journal","Plant Systematics and Evolution"],["dc.bibliographiccitation.lastpage","10"],["dc.bibliographiccitation.volume","240"],["dc.contributor.author","Gailing, Oliver"],["dc.contributor.author","Bachmann, K."],["dc.date.accessioned","2018-11-07T10:36:49Z"],["dc.date.accessioned","2020-05-13T12:17:09Z"],["dc.date.available","2018-11-07T10:36:49Z"],["dc.date.available","2020-05-13T12:17:09Z"],["dc.date.issued","2003"],["dc.description.abstract","Anthers of the common annual weed, Senecio vulgaris, show an incomplete development of the two adaxial pollen sacs (microsporangia, MS). One or both adaxial MS can be missing, or they are replaced by sterile lobes. The reduction is stronger in the derived subspecies, S. vulgaris var. vulgaris than in the ancestral subspecies, S. vulgaris ssp. denticulatus. This character in S. vulgaris differs from the usual complete reduction of adaxial MS in other, independent instances of disporangiate anthers in the Asteraceae. It corresponds to the \"transition phenotypes\" associated with various recombinant genotypes derived from artificial crosses between tetrasporangiate (4 MS) and disporangiate (2 MS) species in the Asteracean genus Microseris. Senecio vulgaris could be a rare natural instance of homozygosity for a major gene permitting reduction of the adaxial MS in which the expression of the reduced phenotype is determined by different numbers of modifiers in the two subspecies."],["dc.identifier.doi","10.1007/s00606-003-0037-7"],["dc.identifier.isi","000186411200001"],["dc.identifier.scopus","2-s2.0-0242491533"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/65345"],["dc.identifier.url","http://www.scopus.com/inward/record.url?eid=2-s2.0-0242491533&partnerID=MN8TOARS"],["dc.language.iso","en"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.relation.eissn","1615-6110"],["dc.relation.issn","0378-2697"],["dc.title","The anthers of Senecio vulgaris (Asteraceae): Saltatory evolution caught in the act"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","Plant Biology"],["dc.bibliographiccitation.volume","1"],["dc.contributor.author","Gailing, Oliver"],["dc.contributor.author","Bachmann, K."],["dc.date.accessioned","2020-05-13T09:53:28Z"],["dc.date.available","2020-05-13T09:53:28Z"],["dc.date.issued","1999"],["dc.identifier.scopus","2-s2.0-0032764262"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/65287"],["dc.identifier.url","http://www.scopus.com/inward/record.url?eid=2-s2.0-0032764262&partnerID=MN8TOARS"],["dc.language.iso","en"],["dc.title","Comparative developmental study of the evolutionary reduction of adaxial microsporangia in Microseris bigelovii (Asteraceae)"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","893"],["dc.bibliographiccitation.issue","5"],["dc.bibliographiccitation.journal","Theoretical and Applied Genetics"],["dc.bibliographiccitation.lastpage","901"],["dc.bibliographiccitation.volume","107"],["dc.contributor.author","Gailing, Oliver"],["dc.contributor.author","Bachmann, K."],["dc.date.accessioned","2018-11-07T10:36:52Z"],["dc.date.accessioned","2020-05-14T07:40:06Z"],["dc.date.available","2018-11-07T10:36:52Z"],["dc.date.available","2020-05-14T07:40:06Z"],["dc.date.issued","2003"],["dc.description.abstract","The reduction of inner (adaxial) pollen sacs (microsporangia, MS) as a diagnostic character for the three asteracean species, Microseris bigelovii, Microseris elegans and Microseris pygmaea, was analysed in an interspecific cross between Microseris douglasii and Microseris bigelovii with 4 MS and 2 MS, respectively, using the average number of MS per plant as a quantitative character. A previous QTL (Quantitative Trait Locus) analysis had revealed one major QTL (313) and three modifier QTLs (3A, 4A, 7A) with epistatic effects only on the homozygous recessive 2 MS genotype of QTL 3B. Here we performed a bulked segregant analysis on four 2 MS and four 4 MS DNA-bulks with 407 EcoRI/MseI AFLP-primer combinations each. In this way additional AFLP markers were mapped close to QTL 3B and QTL 3A. Three of them were converted to SCAR (Sequence Characterized Amplified region) markers. All markers were tested in natural populations of the disporangiate (2 MS) species M. bigelovii, M. elegans and M. pygmaea, and in different populations of tetrasporangiate (4 MS) M. douglasii. The marker distribution suggests that locus 3B mutated in a progenitor of the disporangiate species. QTL 3A has evolved in the 2 MS background of the major gene in the disporangiate species. Since M. pygmaea and M. bigelovii are the sister group to M. elegans, the 4 MS genotype for (markers of) QTL 3A in M. pygmaea populations is most likely due to a back mutation to the 4 MS state and could explain the slight instability of the 2 MS phenotype in this species."],["dc.identifier.doi","10.1007/s00122-003-1324-y"],["dc.identifier.isi","000185117600015"],["dc.identifier.pmid","12838389"],["dc.identifier.scopus","2-s2.0-0141942057"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/45426"],["dc.identifier.url","http://www.scopus.com/inward/record.url?eid=2-s2.0-0141942057&partnerID=MN8TOARS"],["dc.language.iso","en"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.relation.eissn","1432-2242"],["dc.relation.issn","0040-5752"],["dc.title","QTL mapping reveals a two-step model for the evolutionary reduction of inner microsporangia within the asteracean genus Microseris"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","440"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","Plant Biology"],["dc.bibliographiccitation.lastpage","446"],["dc.bibliographiccitation.volume","6"],["dc.contributor.author","Gailing, Oliver"],["dc.contributor.author","Macnair, M. R."],["dc.contributor.author","Bachmann, K."],["dc.date.accessioned","2018-11-07T10:47:56Z"],["dc.date.accessioned","2020-05-13T12:20:12Z"],["dc.date.available","2018-11-07T10:47:56Z"],["dc.date.available","2020-05-13T12:20:12Z"],["dc.date.issued","2004"],["dc.description.abstract","The different response to growth on serpentine soil is a major autecological difference between the annual asteracean species Microseris douglasii and M. bigelovii, with nearly non-overlapping distribution ranges in California. Early flowering and seed set is regarded as a crucial character contributing to escape drought and thus is strongly correlated with survival and reproductive success on serpentine as naturally toxic soil. M. bigelovii (strain C94) from non-serpentine soil produces more leaves at the expense of bud production in the first growing phase than M. douglasii (B14) from serpentine soil. A QTL mapping study for this trade-off and for other growth-related traits was performed after six generations of inbreeding (F7) from a single interspecific hybrid between B14 and C94 on plants that were grown on serpentine and alternatively on normal potting soil. The trade-off is mainly correlated with markers on one map region on linkage group 03a (Ig03a) with major phenotypic effects (phenotypic variance explained [PVE] = 18.8-31.7%). Plants with the M. douglasii allele in QTL-B1 (QTL-NL1) produce more buds but fewer leaves in the first 119 days on both soil types. Three modifier QTL could be mapped for bud and leaf production. In one modifier (QTL-B2 = QTL-NL4) the M. douglasii allele is again associated with more buds but fewer leaves. QTL mapped for bud set in the F6 co-localize with QTL-B1 (major QTL) and QTL-B3. Two additional QTL for leaf length and red coloration of leaves could be mapped to one map region on Ig03a. Co-localization of the two QTL loci with major phenotypic effects on bud and leaf production strongly suggests that a major genetic locus controls the trade-off between the two adaptive traits. The importance of mutational changes in major genes for the adaptation to stressful environments is discussed."],["dc.identifier.doi","10.1055/s-2004-817958"],["dc.identifier.isi","000222860400009"],["dc.identifier.pmid","15248127"],["dc.identifier.scopus","2-s2.0-3242681703"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/48080"],["dc.identifier.url","http://www.scopus.com/inward/record.url?eid=2-s2.0-3242681703&partnerID=MN8TOARS"],["dc.language.iso","en"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.relation.eissn","1438-8677"],["dc.relation.issn","1435-8603"],["dc.title","QTL mapping for a trade-off between leaf and bud production in a recombinant inbred population of Microseris douglasii and M. bigelovii (Asteraceae, Lactuceae): A potential preadaptation for the colonization of serpentine soils"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","455"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","Plant Biology"],["dc.bibliographiccitation.lastpage","461"],["dc.bibliographiccitation.volume","2"],["dc.contributor.author","Gailing, Oliver"],["dc.contributor.author","Bachmann, K."],["dc.date.accessioned","2020-05-13T12:16:31Z"],["dc.date.available","2020-05-13T12:16:31Z"],["dc.date.issued","2000"],["dc.description.abstract","The loss of the two inner (adaxial) microsporangia (MS) on the anthers is a shared, derived character for three species of the genus Microseris (Asteraceae). In a hybrid between M. douglasii (4 MS) and M. bigelovii (2 MS), one major gene and four modifier loci are responsible for the difference in MS number. The homozygous recessive (2 MS) genotype of the major gene is necessary but not sufficient for the reduction. In addition, at least five M. bigelovii (2 MS) alleles of the three major modifiers are needed for a stable 2‐MS phenotype in all florets of a plant. One, two or three M. bigelovii alleles of the modifiers cause the random reduction or loss of some of the adaxial MS. When the major gene and two modifiers specify 2 MS and only one modifier is homozygous for the M. douglasii (4 MS) alleles, sister plants can have any phenotype from pure 2 MS to pure 4 MS. Here, we examine the phenotypic expression of these genotypes raised under the normal winter annual conditions and under long‐day conditions. In all cases, the phenotypes vary among sister plants, but the range of variation (most notably under long‐day conditions) depends on the specific modifier gene contributing the M. douglasii alleles. The phenotypic variance in one of the genotypes was decreased by a factor of ten in the depauperate heads produced in the long‐day experiment. This effect is mediated by a dependence of the MS phenotype on the position of the floret relative to the edge of the flowering head (capitulum) and directly by the size of the capitulum. Genotypes specifying phenotypes with more or less precisely two or four MS in all florets show hardly any dependence on environmental or developmental factors. The significance of these observations lies in the non‐linear, “canalized” relationship between phenotypic expression and gene dosage, which shows how a qualitative morphological change dependent on a single major gene mutation can pass through a potentially maladaptive intermediate stage."],["dc.identifier.doi","10.1055/s-2000-5955"],["dc.identifier.scopus","2-s2.0-0033841679"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/65340"],["dc.identifier.url","http://www.scopus.com/inward/record.url?eid=2-s2.0-0033841679&partnerID=MN8TOARS"],["dc.language.iso","en"],["dc.relation.eissn","1438-8677"],["dc.relation.issn","1435-8603"],["dc.title","The evolutionary reduction of microsporangia in Microseris (Asteraceae): Transition genotypes and phenotypes"],["dc.type","journal_article"],["dc.type.internalPublication","no"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","Plant Biology"],["dc.bibliographiccitation.volume","1"],["dc.contributor.author","Gailing, Oliver"],["dc.contributor.author","Hombergen, E.-J."],["dc.contributor.author","Bachmann, K."],["dc.date.accessioned","2020-05-13T11:50:33Z"],["dc.date.available","2020-05-13T11:50:33Z"],["dc.date.issued","1999"],["dc.identifier.scopus","2-s2.0-0032944991"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/65317"],["dc.identifier.url","http://www.scopus.com/inward/record.url?eid=2-s2.0-0032944991&partnerID=MN8TOARS"],["dc.language.iso","en"],["dc.title","QTL mapping reveals specific genes for the evolutionary reduction of microsporangia in Microseris (Asteraceae)"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","277"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","Organisms Diversity & Evolution"],["dc.bibliographiccitation.lastpage","288"],["dc.bibliographiccitation.volume","2"],["dc.contributor.author","Gailing, Oliver"],["dc.contributor.author","Bachmann, K."],["dc.date.accessioned","2018-11-07T10:33:33Z"],["dc.date.accessioned","2020-05-13T10:48:01Z"],["dc.date.available","2018-11-07T10:33:33Z"],["dc.date.available","2020-05-13T10:48:01Z"],["dc.date.issued","2002"],["dc.description.abstract","There are few reliable diagnostic morphological characters for species of the asteracean genus Microseris, and quantitative differences in the shapes of the achenes and the paleaceous pappus parts play a decisive role in species recognition. The genetic basis of species and strain differences in various characters has been studied previously, but little is known about quantitative characters of the achenes. We performed a quantitative trait locus (QTL) analysis in the F2 of an interspecific cross between Microseris douglasii and M. bigelovii for achene length, achene diameter, achene shape, palea length, awn length, and achene pigmentation. Independent inheritance of the main heritable achene characters - achene length, palea length and achene pigmentation - was revealed by the detection of distinct and specific QTLs for these characters. For palea length five QTLs with about equal phenotypic effects were mapped on four different linkage groups. Achene length and achene shape (achene length / achene diameter) were determined by two different genetic systems with one major gene and two modifiers. The detection of QTLs with a polarity of the effects opposite to that in the parental strains for achene length and achene shape reveals genetic variation for a potential increase in species differences. For the highly heritable trait, achene pigmentation, the bimodal F2 distribution suggested single-factor inheritance for absence versus presence of spots, with dominance for the spotted condition. However, only relatively weak QTL effects on that trait could be detected. Additional molecular markers (RAPDs, AFLPs) have to be tested for cosegregation with that major gene. The results are discussed in the context of different theories for the evolution of morphological characters."],["dc.identifier.doi","10.1078/1439-6092-00041"],["dc.identifier.isi","000179942500001"],["dc.identifier.scopus","2-s2.0-0036457191"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/44640"],["dc.identifier.url","http://www.scopus.com/inward/record.url?eid=2-s2.0-0036457191&partnerID=MN8TOARS"],["dc.language.iso","en"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.relation.issn","1439-6092"],["dc.title","QTL analysis reveals different and independent modes of inheritance for diagnostic achene characters in Microseris (Asteraceae)"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]