[Appraisal of occupational stressor in petrochemical industry workers].

Objective: To discuss the origin of occupational stress among petrochemical industry workers and to access the main occupational stressors that impact job satisfaction and mental health of petrochemical industry workers.

Methods: A survey on occupational stressor was carried out by Occupational Stress Indicator (OSI) in 532 petrochemical industry workers (345 chemical and 187 logistic workers).

Results: The environment in workplace of chemical group was worse than that of contrast.

Isolation and manipulation of quantitative trait loci for disease resistance in rice using a candidate gene approach.

Bacterial blight caused by Xanthomonas oryzae pv. oryzae and fungal blast caused by Magnaporthe grisea result in heavy production losses in rice, a main staple food for approximately 50% of the world's population. Application of host resistance to these pathogens is the most economical and environment-friendly approach to solve this problem.