Microbiology and Nitrogen Cycle

Massilia putida discovered in 2016 from the Jiangxi Province in China that has the ability to produce dimethyl cyanide.

Chryseobacterium arachidiradicis is a Gram-negative and rod-shaped bacteria isolated from soil around peanut in Alabama, United States in 2015.

Rhizobium bangladeshense can grow in the presence of lincomycin.

This is the correct match Streptomyces alfalfae has been isolated from rhizosphere soil from an alfalfa field in Jingyang in China, Streptomyces actinomycinicus has been isolated from soil from a peat swamp forest in the Rayong Province in Thailand. Psychroflexus planctonicus has been isolated from the Lake Xiaochaidan in Qaidam Basin in the Qinghai Province in China. Massilia putida has been isolated from a wolfram mine in Dayu County in the Jiangxi Province in China.

Enterobacter bulb decay is a recently described storage disease of onion (Allium cepa), member of liliaceae family that is caused by Enterobacter cloacae. The disease was reported in 2011. In this disease, the exterior of the bulb remains asymptomatic while the inner scales show a brown to black discoloration and decay.

An organism, such as a strain of bacteria, that has lost the ability to synthesise certain substances required for its growth and metabolism.

Rhizobium and leguminous plants share a mutual relation with each other, which includes benefiting each other and getting benefited from each other. 

Soyabean is a legume which is associated symbiotically with Rhizobium.

Gallionella is an iron bacterium which oxidises Fe⁺⁺ as a source of energy for lithoautotrophic growth. Nitrobacter is a nitryfying bacterium which oxidises NO₂ to NO₃.

Thermodesulfobacterium uses organic compounds from pyruvate synthase pathway as major C-source.

Beggiatoa is a genus of chemosynthetic filamentous sulphur-oxidising bacteria.

Nitrobacter and Nitrocystis change nitrites to nitrates.

The bacterium Propionibacterium acne type zappa colonises bark tissues and the pith of grapevine where the bacterium can localise intracellularly. This bacterium is the first evidence of human to plant obligate transfer.

Streptomyces chilikensis and Streptomyces barkulensis cannot tolerate extreme temperature.

Correct Answer: It can oxidise ammonia.