Definition of haustorium in English:

haustorium

nounPlural haustoria hɔːˈstɔːrɪəmhôˈstôrēəm

Botany

A slender projection from the root of a parasitic plant, such as a dodder, or from the hyphae of a parasitic fungus, enabling the parasite to penetrate the tissues of its host and absorb nutrients from it.
Example sentencesExamples
- Mildew hyphae grow on the exterior of the plant and remove nutrients from their host via haustoria sent into epidermal cells.
- Cuscuta contains at least 158 species that no longer possess leaves, but their stems twine around host plants producing numerous haustoria to obtain nutrients.
- Specialized parasitic structures called haustoria are formed within host cells, through which nutrients are drawn from the host.
- The germinated seedling infects host roots by developing an haustorium that penetrates the host root and serves as a physiological bridge between the two organisms.
- Parasitic plants can form haustoria within various host tissues, and this has led to convenient, yet unsatisfactory distinctions being made between a ‘shoot parasite’ and a ‘root parasite’.

Derivatives

haustorial

adjective

Botany

The host sieve elements of the phloem are lined by haustorial transfer cells of the parasite, which then allow unloading of host phloem solutes into the parasite haustorium.
Example sentencesExamples
- A requirement for infection is the differentiation of root-like protrusions, which are capable of producing haustorial connections to the host.
- The sucrose supplied by the megagametophyte is absorbed by the embryo cotyledons, acting as haustorial organs, and then transported into the embryonic tissues for seedling growth and development.
- Ultrastructural studies of the silky layer revealed that none of the hyphae in this layer form haustorial connections with the algae.
- The placentas are likewise the same in the four genera and comprise elongate haustorial sporophyte cells growing into the closely adjacent gametophyte cells.

Origin

Late 19th century: modern Latin, from Latin haustor 'thing that draws in', from the verb haurire.

Definition of haustorium in US English:

haustorium

nounhôˈstôrēəm

Botany

A slender projection from the root of a parasitic plant, such as a dodder, or from the hyphae of a parasitic fungus, enabling the parasite to penetrate the tissues of its host and absorb nutrients from it.
Example sentencesExamples
- The germinated seedling infects host roots by developing an haustorium that penetrates the host root and serves as a physiological bridge between the two organisms.
- Mildew hyphae grow on the exterior of the plant and remove nutrients from their host via haustoria sent into epidermal cells.
- Cuscuta contains at least 158 species that no longer possess leaves, but their stems twine around host plants producing numerous haustoria to obtain nutrients.
- Parasitic plants can form haustoria within various host tissues, and this has led to convenient, yet unsatisfactory distinctions being made between a ‘shoot parasite’ and a ‘root parasite’.
- Specialized parasitic structures called haustoria are formed within host cells, through which nutrients are drawn from the host.

Origin

Late 19th century: modern Latin, from Latin haustor ‘thing that draws in’, from the verb haurire.

单词	haustorium
释义	Definition of haustorium in English: haustorium nounPlural haustoria hɔːˈstɔːrɪəmhôˈstôrēəm Botany A slender projection from the root of a parasitic plant, such as a dodder, or from the hyphae of a parasitic fungus, enabling the parasite to penetrate the tissues of its host and absorb nutrients from it. Example sentencesExamples Mildew hyphae grow on the exterior of the plant and remove nutrients from their host via haustoria sent into epidermal cells. Cuscuta contains at least 158 species that no longer possess leaves, but their stems twine around host plants producing numerous haustoria to obtain nutrients. Specialized parasitic structures called haustoria are formed within host cells, through which nutrients are drawn from the host. The germinated seedling infects host roots by developing an haustorium that penetrates the host root and serves as a physiological bridge between the two organisms. Parasitic plants can form haustoria within various host tissues, and this has led to convenient, yet unsatisfactory distinctions being made between a ‘shoot parasite’ and a ‘root parasite’. Derivatives haustorial adjective Botany The host sieve elements of the phloem are lined by haustorial transfer cells of the parasite, which then allow unloading of host phloem solutes into the parasite haustorium. Example sentencesExamples A requirement for infection is the differentiation of root-like protrusions, which are capable of producing haustorial connections to the host. The sucrose supplied by the megagametophyte is absorbed by the embryo cotyledons, acting as haustorial organs, and then transported into the embryonic tissues for seedling growth and development. Ultrastructural studies of the silky layer revealed that none of the hyphae in this layer form haustorial connections with the algae. The placentas are likewise the same in the four genera and comprise elongate haustorial sporophyte cells growing into the closely adjacent gametophyte cells. Origin Late 19th century: modern Latin, from Latin haustor 'thing that draws in', from the verb haurire. Definition of haustorium in US English: haustorium nounhôˈstôrēəm Botany A slender projection from the root of a parasitic plant, such as a dodder, or from the hyphae of a parasitic fungus, enabling the parasite to penetrate the tissues of its host and absorb nutrients from it. Example sentencesExamples The germinated seedling infects host roots by developing an haustorium that penetrates the host root and serves as a physiological bridge between the two organisms. Mildew hyphae grow on the exterior of the plant and remove nutrients from their host via haustoria sent into epidermal cells. Cuscuta contains at least 158 species that no longer possess leaves, but their stems twine around host plants producing numerous haustoria to obtain nutrients. Parasitic plants can form haustoria within various host tissues, and this has led to convenient, yet unsatisfactory distinctions being made between a ‘shoot parasite’ and a ‘root parasite’. Specialized parasitic structures called haustoria are formed within host cells, through which nutrients are drawn from the host. Origin Late 19th century: modern Latin, from Latin haustor ‘thing that draws in’, from the verb haurire.
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