Comparison of average crop yields with reported record yields has shown that major crops exhibit annual average yields three- to seven-fold lower than record yields because of unfavorable environments. The current study investigated the enhancement of pollen heat tolerance through expressing an Arabidopsis thaliana heat shock protein 101 (AtHSP101) that is not normally expressed in pollen but r...

Running head: 1 OsHTAS enhances heat tolerance in rice 2 3 Corresponding author: 4 Jumin Tu 5 Institute of Crop Science 6 Zhejiang University 7 866 Yuhangtang Road 8 Hangzhou, 310058, China 9 Tel: +86-0571-88982835 10 Fax: +86-0571-88982835 11 E-mail: [email protected] 12 13 Cuicui Zhang 14 Institute of Crop Science 15 Zhejiang University 16 866 Yuhangtang Road 17 Hangzhou, 310058, China 18 Tel: +...

OBJECTIVE The aim of this study was to evaluate heat tolerance using heat tolerance indices, physiological, physical, thermographic, and hematological parameters in Santa Ines and Morada Nova sheep breeds in the Federal District, Brazil. METHODS Twenty-six adult hair sheep, one and a half years old, from two genetic groups (Santa Ines: 12 males and 4 females; Morada Nova: 7 males and 3 female...

Studies using core temperature (T(c)) have contributed greatly to theoretical explanations of drug tolerance and its relationship to key features of addiction, including dependence, withdrawal, and relapse. Many theoretical accounts of tolerance propose that a given drug-induced psychobiological disturbance elicits opponent responses that contribute to tolerance development. This proposal and i...

Arabidopsis (Arabidopsis thaliana) group A1 heat shock factors (Hsfs), including HsfA1a, are important regulators in the heat shock response. Previous studies have revealed that genetically engineered HsfA1 members result in constitutive Hsf activation and heat shock protein gene (Hsp) expression under normal conditions, eventually enhancing basic thermotolerance in transgenic plants. In this s...

The survival rate of domestic male and female adult Panstrongylus megistus was studied after sequential heat and cold shocks in order to investigate shock tolerance compared to that previously reported for nymphs. Sequential shocks were such that a milder shock (0 degree C, 5 degrees C, 35 degrees C, or 40 degrees C for 1 h) preceded a severe one (0 degree C or 40 degrees C for 12 h), separated...

Heat stress is a major constraint to wheat production and negatively impacts grain quality, causing tremendous economic losses, and may become a more troublesome factor due to global warming. At the cellular level, heat stress causes denaturation and aggregation of proteins and injury to membranes leading to alterations in metabolic fluxes. Protein aggregation is irreversible, and protection of...

Heat tolerance is well known to be key to fungal survival in many habitats, but our mechanistic understanding of how organisms adapt to heat stress is still incomplete. Using Metarhizium robertsii, an emerging model organism for assessing evolutionary processes, we report that pyruvate is in the vanguard of molecules that scavenge heat-induced reactive oxygen species (ROS). We show that, as wel...