A mitosporic fungal genus commonly isolated from soil. Some species are the cause of wilt diseases in many different plants.
A strand of primary conductive plant tissue consisting essentially of XYLEM, PHLOEM, and CAMBIUM.
Diseases of plants.
A plant genus of the family MALVACEAE. It is the source of COTTON FIBER; COTTONSEED OIL, which is used for cooking, and GOSSYPOL. The economically important cotton crop is a major user of agricultural PESTICIDES.
A plant species of the genus SOLANUM, family SOLANACEAE. The fruit is a large, egg-shaped berry, varying in color from dark purple to red, yellowish, or white. The leaves are large and ovate. The flowers are pendant, violet, and two inches across.
A large and heterogenous group of fungi whose common characteristic is the absence of a sexual state. Many of the pathogenic fungi in humans belong to this group.
A plant species of the family BRASSICACEAE best known for the edible roots.
The capacity of an organism to defend itself against pathological processes or the agents of those processes. This most often involves innate immunity whereby the organism responds to pathogens in a generic way. The term disease resistance is used most frequently when referring to plants.
A plant genus of the family Oleaceae. The olive fruit is the source of olive oil.
Plant tissue that carries water up the root and stem. Xylem cell walls derive most of their strength from LIGNIN. The vessels are similar to PHLOEM sieve tubes but lack companion cells and do not have perforated sides and pores.
A natural association between organisms that is detrimental to at least one of them. This often refers to the production of chemicals by one microorganism that is harmful to another.
A plant genus of the family ASCLEPIADACEAE. Members contain steroidal glycosides and cytotoxic phenanthroindolizidine N-oxide alkaloids.
The usually underground portions of a plant that serve as support, store food, and through which water and mineral nutrients enter the plant. (From American Heritage Dictionary, 1982; Concise Dictionary of Biology, 1990)
Deoxyribonucleic acid that makes up the genetic material of fungi.