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The Sorghum bicolor genome and the diversification of grasses
TLDR
An initial analysis of the ∼730-megabase Sorghum bicolor (L.) Moench genome is presented, placing ∼98% of genes in their chromosomal context using whole-genome shotgun sequence validated by genetic, physical and syntenic information.
The genome of the pear (Pyrus bretschneideri Rehd.).
TLDR
The draft genome of the pear using a combination of BAC-by-BAC and next-generation sequencing is reported, and size differences between the apple and pear genomes are confirmed mainly due to the presence of repetitive sequences predominantly contributed by transposable elements (TEs), while genic regions are similar in both species.
Sex Determination: Why So Many Ways of Doing It?
TLDR
The current understanding of how and why sex determination evolves in animals and plants is reviewed.
Sex chromosomes in land plants.
Sex chromosomes in land plants can evolve as a consequence of close linkage between the two sex determination genes with complementary dominance required to establish stable dioecious populations,
The draft genome of the transgenic tropical fruit tree papaya (Carica papaya Linnaeus)
TLDR
Papaya offers numerous advantages as a system for fruit-tree functional genomics, and this draft genome sequence provides the foundation for revealing the basis of Carica’s distinguishing morpho-physiological, medicinal and nutritional properties.
Unraveling ancient hexaploidy through multiply-aligned angiosperm gene maps.
TLDR
It is shown that a shared ancient hexaploidy event (or perhaps two roughly concurrent genome fusions) can be inferred based on the sequences from several divergent plant genomes, laying the foundation for approximating the number and arrangement of genes in the last universal common ancestor of angiosperms.
Synteny and Collinearity in Plant Genomes
TLDR
New genome sequences and improved analytical approaches are clarifying angiosperm evolution and revealing patterns of differential gene loss after genome duplication and differential gene retention associated with evolution of some morphological complexity.
ALLMAPS: robust scaffold ordering based on multiple maps
TLDR
AllMAPS is a method capable of computing a scaffold ordering that maximizes colinearity across a collection of maps, which is robust against common mapping errors, and generates sequences that are maximally concordant with the input maps.
The pineapple genome and the evolution of CAM photosynthesis
TLDR
The pineapple lineage has transitioned from C3 photosynthesis to CAM, with CAM-related genes exhibiting a diel expression pattern in photosynthetic tissues, providing the first cis-regulatory link between CAM and circadian clock regulation.
A primitive Y chromosome in papaya marks incipient sex chromosome evolution
TLDR
It is shown that papaya contains a primitive Y chromosome, with a male-specific region that accounts for only about 10% of the chromosome but has undergone severe recombination suppression and DNA sequence degeneration, providing direct evidence for the origin of sex chromosomes from autosomes.
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