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Endophyte
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<p>An endophyte is an <a href="/facts/Endosymbiont/eWvSS8ID">endosymbiont</a>, often a <a href="/facts/Bacterium/wC8xSCsU">bacterium</a> or <a href="/facts/Fungus/BHo5DP59">fungus</a>, that lives within a <a href="/facts/Plant/X5BMDMvS">plant</a> for at least part of its life cycle without causing apparent disease. Endophytes are ubiquitous and have been found in all species of plants studied to date; however, most of the endophyte/plant relationships are not well understood. Some endophytes may enhance host growth and nutrient acquisition and improve the plant's ability to tolerate abiotic stresses, such as drought, and decrease biotic stresses by enhancing plant resistance to insects, pathogens and <a href="/facts/Herbivore/me4YFdQA">herbivores</a>. Although endophytic bacteria and fungi are frequently studied, endophytic archaea are increasingly being considered for their role in plant growth promotion as part of the core microbiome of a plant. </p>