Long-term human influence on the demography and genetic diversity of the hyperdominant Bertholletia excelsa in the Amazon Basin.

The Amazon rainforest is characterized by a limited number of hyperdominant trees that play an oversized role in its ecosystems, nutrient cycle, and rainfall production. Some of these, such as the Brazil nut, appear to have been intensively exploited and dispersed by Indigenous populations since their earliest arrival in this part of South America around 13,000 years ago. However, the genetic diversity-and geographic structure-of these species remains poorly understood, as does their exact relationship with past human land use.

Are you Cheating on Me? Identifying Factors Contributing to the Use of Suspicion Confirmation and Avoidance Strategies.

This study integrates communication, motivational, and behavioral elements to identify factors that lead to the use of key information seeking strategies people employ to confirm or avoid suspicions about a partner's potential cheating. Individuals (N = 246) who suspected a partner's infidelity reported engaging in five general suspicion confirmation strategies: conversation, intrusion, snooping, surveillance, and avoidance. SEM results revealed that individuals who reported more suspicious partner behavior, greater suspicion and uncertainty about a partner's infidelity, suspicion-related anxiety, and a stronger desire to confirm their suspicions reported using the suspicion confirmation and avoidance strategies more often.

TIPPo: A User-Friendly Tool for De Novo Assembly of Organellar Genomes with High-Fidelity Data.

Plant cells have two major organelles with their own genomes: chloroplasts and mitochondria. While chloroplast genomes tend to be structurally conserved, the mitochondrial genomes of plants, which are much larger than those of animals, are characterized by complex structural variation. We introduce TIPPo, a user-friendly, reference-free assembly tool that uses PacBio high-fidelity long-read data and that does not rely on genomes from related species or nuclear genome information for the assembly of organellar genomes.

Transposon-triggered epigenetic chromatin dynamics modulate EFR-related pathogen response.

Infectious diseases drive wild plant evolution and impact crop yield. Plants, like animals, sense biotic threats through pattern recognition receptors (PRRs). Overly robust immune responses can harm plants; thus, understanding the tuning of defense response mechanisms is crucial for developing pathogen-resistant crops.

Gretl-variation GRaph Evaluation TooLkit.

Motivation: As genome graphs are powerful data structures for representing the genetic diversity within populations, they can help identify genomic variations that traditional linear references miss, but their complexity and size makes the analysis of genome graphs challenging. We sought to develop a genome graph analysis tool that helps these analyses to become more accessible by addressing the limitations of existing tools. Specifically, we improve scalability and user-friendliness, and we provide many new statistics tailored to variation graphs for graph evaluation, including sample-specific features.