pseudobipolar mating system

Trait evidence (2)

• DOI:10.1371/journal.pgen.1001052

  occasional disruptions of the genetic cohesion of the bipolar MAT locus originate new mating types.

  Coelho et al. (2010), PMID:20700437, PMC2916851. Exact clause in scientific abstract abstract1, checked against raw Europe PMC metadata and full-text XML, not the author summary. Results/Discussion and Methods were read, with actual Figures 3-5, Figure S5 and both pages of Table S1 inspected. Sporidiobolus salmonicolor CBS 6832 x ML 2241 yielded the recombinant T7.1, incompatible with either parent but compatible with CBS 490 in Figure 4. The scored endpoint is clamp-bearing mycelium and teliospores after four days on corn meal agar at 25 C; normal germination after compatible T7 crosses is reported in prose as results not shown. Eight teliospores came from one parental cross; colonies from a teliospore are mostly mitotic clones, and T8 was apparently diploid. The authors require larger samples for statistically significant linkage and precise recombination frequencies. Figure 5 partly assumes S. roseus synteny, not a complete S. salmonicolor chromosome assembly. Table S1 and Figures 3/4 label CBS 6832 A2-15, whereas the germination and micromanipulation Methods say A2-6; strain identity is kept without silently reconciling that discrepancy. Table S1 gives CBS 6832 a clinical origin but only names ML 2241's isolator, so full parental provenance and active taxonomy remain unresolved. Other actual figures and supplements remain uninspected. This is native crossing evidence, not solely MAT sequence annotation or a precise population rate.

• DOI:10.1371/journal.pbio.3003417

  In the pseudobipolar configuration, the P/R and HD loci remained on the same chromosome but genetically unlinked

  Coelho et al. (2025), PMID:41042803, PMC12510652. Exact scientific-abstract clause checked against raw Europe PMC metadata, full-text XML and publisher HTML. Supports the broader same-chromosome, recombination-permitting usage, not an independent functional replication in Kwoniella europaea. Abstract, Introduction, first two Results subsections, the relevant Discussion paragraph in sec017 and actual Figure 1 were read. Figure 1B classifies its breeding system as likely heterothallic; Figure 1E shows separated loci in PYCC6329. Despite the abstract's declarative wording, sec017 says crosses have not yielded sexual reproduction and treats persistent recombination as conditional. Physical distance alone does not exclude long-range recombination suppression. Its inferred configuration therefore does not establish observed mating or fertility. The C. decagattii and K. mangrovensis sexual results cannot be transferred to K. europaea. Other Results, Methods, figures and supplements remain uninspected.