Maruts - Probiotic Microbes in Vedas

यजु 17।3 Yajurved 17.3
ऋतव:स्थऽऋतावृधऽऋतुष्ठा: स्थऽऋतावृध:। घृतश्च्यतो मधुश्च्यतो विरजो नाम कामदुधाऽक्षीयमाणा:।।
ऋतवृध: ऋतव: स्थ-----Stable system of season wise provision
ऋतावृध: ऋतिष्ठा:------attaining their growth according to the seasons
घृतच्युत: मधुश्चुत: विराज: नाम कामदुधा: अक्षीयमाणा: स्थ ----providing the sweetness and nutritive bounties like a cow fulfilling all our desires and not causing any harms to us.
These are the working of microorganisms in providing fruits, vegetables and cereals of nutritive quality, sweetness and flavours according to seasons by working through soil, irrigation and atmospheric actions
Thus these useful microorganisms perform the functions of the proverbial cow KAMDHENU by working through vegetative worlds to meet all our desires.
Lest there is an impression given by this mantra, that these microbes function only in the botanical world, there are ample reference in Vedas, to the functioning of the microbes by the action of enzymes in the production of milk in cows by the action in rumens and the digestive assimilation of our food through our intestines in working of fermentation in food products in human body etc.