Freebase(0.00 / 0 votes)Rate this definition: Root nodule. Root nodules occur on the roots of plants that associate with symbiotic nitrogen-fixing bacteria. Under nitrogen-limiting conditions, capable plants form a symbiotic relationship with a host-specific strain of bacteria known as rhizobia.
Ayurvedic health benefits of bottle gourd/lau/ lauki: 1  Ayurveda recommends cooked lauki or bottle gourd for better digestion. It is cooling, calming, diuretic and anti-bilious (reduces bile and stops indigestion).
The environmental benefits of using reclaimed water include: 1  Increased water quantity: Decreased diversion of freshwater from wetlands and other ecosystems. 2  Increased water quality: Reduction in the amount of nutrients entering the Chesapeake Bay, its tributaries, and other water bodies.