Qhov sib txawv tseem ceeb ntawm glandular thiab non-glandular trichomes yog glandular trichomes muaj lub taub hau glandular thiab secrete cov metabolites theem nrab. Nyob rau hauv sib piv, non-glandular trichomes tsis ua ib tug glandular taub hau thiab tiv thaiv cov nroj tsuag tiv thaiv UV teeb.
Trichome yog ib qho kev loj hlob ntawm epidermal pom zoo li cov plaub hau me me ntawm cov nroj tsuag qia thiab ceg. Lawv feem ntau muab kev tiv thaiv rau cov nroj tsuag tiv thaiv UV teeb, kab, transpiration, thiab khov intolerance. Tej zaum yuav muaj ntau hom trichomes li plaub hau, glandular plaub hau, nplai, thiab papillae, thiab lwm yam. Qee cov trichomes tej zaum yuav glandular. Glandular trichomes secretes secretions xws li metabolites, tseem ceeb roj, thiab lwm yam. Non-glandular trichomes tiv thaiv cov nroj tsuag los ntawm UV teeb.
Glandular Trichomes yog dab tsi?
Glandular trichomes yog ib hom nroj tsuag trichomes uas zais ntau yam metabolites tseem ceeb rau cov nroj tsuag. Lawv muaj lub taub hau glandular. Functionally, lawv yog cov ntaub so ntswg tshwj xeeb. Lawv kuj muaj peev xwm khaws los yog volatilize cov secretions ntawm cov nroj tsuag nto. Cov metabolites theem nrab no yog siv rau pollination, tiv thaiv, thiab kev tiv thaiv. Ib qho ntawm cov metabolites secreted los ntawm glandular trichomes yog ib qho tseem ceeb roj, uas yog heev pab tau nyob rau hauv cov tshuaj thiab tshuaj pleev ib ce. Ntxiv mus, cov nroj tsuag uas muaj glandular trichomes secrete metabolites xws li terpenoids, phenylpropanoids, flavonoids, thiab methyl ketones.
Daim duab 01: Glandular Trichome
Glandular trichomes muaj nyob rau ntawm thaj tsam li 30% ntawm tag nrho cov nroj tsuag vascular. Muaj ob lub ntsiab ntawm glandular trichomes li peltate thiab capitate. Peltate trichomes secrete tsuas yog lipophilic tshuaj, thaum capitate trichomes feem ntau secrete polysaccharide khoom.
Dab tsi yog Tsis-glandular Trichomes?
Non-glandular trichomes yog ib hom nroj tsuag trichomes uas tsis muaj lub taub hau. Lawv muaj nyias apex. Non-glandular trichomes tuaj yeem yog unicellular lossis multicellular. Tsis tas li ntawd, lawv tuaj yeem yog branched los yog unbranched. Feem ntau cov tsis-glandular trichomes yog yooj yim, branchedessential thiab lub hnub qub zoo li.
Daim duab 02: Tsis-glandular Trichome
Functionally, non-glandular trichomes tsis koom nrog hauv kev tsim khoom, cia thiab tso tawm ntawm cov tshuaj lom neeg lom neeg, tsis zoo li glandular trichomes. Hloov chaw, lawv tsuas yog pab hauv kev tiv thaiv lub cev ntawm cov nroj tsuag tiv thaiv biotic thiab abiotic stresses, tsim ib qho kev tiv thaiv tiv thaiv cov av qis, kub siab, thiab hnub ci hluav taws xob.
Dab tsi zoo sib xws ntawm Glandular thiab Non-glandular Trichomes?
- Ntau yam uas tsis yog qog thiab qog nqaij hlav feem ntau npog qhov chaw ntawm cov kab mob hauv nruab nrog cev.
- Tus yam ntxwv ntawm glandular thiab non-glandular trichomes tuaj yeem siv los faib cov nroj tsuag.
- Lawv tuaj yeem yog unicellular lossis multicellular thiab branched lossis unbranched.
- Ob hom trichomes yog qhov tseem ceeb rau kev tiv thaiv cov nroj tsuag tawm tsam herbivores thiab pathogens.
Qhov txawv ntawm Glandular thiab Non-glandular Trichomes yog dab tsi?
Glandular trichomes yog cov trichomes uas muaj lub taub hau glandular thiab zais cov metabolites theem nrab. Nyob rau hauv sib piv, non-glandular trichomes yog cov trichomes uas muaj ib tug nyias apex thiab muab kev tiv thaiv lub cev rau cov nroj tsuag. Yog li, qhov no yog qhov txawv ntawm glandular thiab non-glandular trichomes. Tsis tas li ntawd, muaj lub taub hau glandular nyob rau hauv glandular trichomes, thaum uas tsis yog-glandular trichomes tsis muaj lub taub hau glandular. Tsis tas li ntawd, glandular trichomes secrete cov metabolites theem nrab uas tseem ceeb rau pollination, tiv thaiv, thiab kev tiv thaiv, thaum uas tsis yog-glandular trichomes muab kev tiv thaiv lub cev ntawm cov nroj tsuag tiv thaiv biotic thiab abiotic stresses. Yog li, qhov no yog qhov sib txawv ntawm glandular thiab non-glandular trichomes.
Hauv qab infographic tabulates qhov sib txawv ntawm glandular thiab non-glandular trichomes.
Summary – Glandular vs Non-glandular Trichomes
Trichomes yog epidermal appendages muab tau los ntawm ntau yam epidermal hlwb ntawm qia los yog nplooj. Ua haujlwm tau zoo, lawv muab kev tiv thaiv lub cev tiv thaiv sab nraud, xws li tsiaj txhu thiab kab mob, thiab tseem pab tiv thaiv kom tsis txhob poob dej los yog muab kev tiv thaiv huab cua kub thiab hluav taws xob ultraviolet. Trichomes tuaj yeem yog glandular lossis tsis-glandular raws li tso tawm ntawm cov metabolites theem nrab. Glandular trichomes secrete theem nrab metabolites, thaum uas tsis yog-glandular trichomes tsis zais cov metabolites theem nrab. Yog li, qhov no yog qhov txawv ntawm glandular thiab non-glandular trichomes.
