Soil and Plant-Microbe Interactions: A Glossary of Key Terms, Quizzes of Microbiology

Download Soil and Plant-Microbe Interactions: A Glossary of Key Terms and more Quizzes Microbiology in PDF only on Docsity! TERM 1 Soil separates DEFINITION 1 sand>silt>clay TERM 2 Soil subsidence DEFINITION 2 motion of a surface (usually, the Earth's surface) as it shifts downward relative to a datum such as sea-level.- When drained, the anaerobic aerobic conversion accelerates the microbial conversion of the soil organic matter to CO2 and other gas products- soil subsidence => soil organics => CO2 released => decreased soil volume TERM 3 Epiphytes DEFINITION 3 colonize plant surface TERM 4 Endophytes DEFINITION 4 colonize plant interior TERM 5 Pyllosphere DEFINITION 5 - aerial leaf surface of plants- Communities of microorganisms that develop on the phyllosphere are adapted to tolerate high irradiation and low humidity stresses- Many phyllosphere microorganisms antagonize airborne pathogens thereby protecting the plant. TERM 6 Rhizosphere DEFINITION 6 region adjacent to the root TERM 7 Rhizoplane DEFINITION 7 the root surface TERM 8 Legumes DEFINITION 8 N is the nutrient most commonly limiting plant productivity, and legume crops can offset that limitation by forming an efficient N2-fixing symbiosis with Rhizobium TERM 9 Peribacteriod membrane DEFINITION 9 Within the root nodule, the bacteria are released from infection threads into the host cell while still enclosed within a host-derived membrane called the peribacteroid membrane. TERM 10 Bacteroid DEFINITION 10 They then divide and transform into enlarged pleomorphic bacteroids and make the enzymatic machinery which carry out N2-fixation.