sentences:  In 6-month-old coffee seedlings, 98% died within 10 days of inoculation with "R. bunodes".Early signs of "R. bunodes" colonization include white, cottony growth on roots that also progressively darken with age.As mycelia grow, they form dense mats over roots and at the base of tree trunks that thicken into irregular knots and aggregate into rhizomorphs.