Definition of Protonema. Meaning of Protonema. Synonyms of Protonema

Here you will find one or more explanations in English for the word Protonema. Also in the bottom left of the page several parts of wikipedia pages related to the word Protonema and, of course, Protonema synonyms and on the right images related to the word Protonema.

Definition of Protonema

Protonema
Protonema Pro`to*ne"ma, n.; pl. Protonemata. [NL., fr. Gr. ? first + ?, ?, a thread.] (Bot.) The primary growth from the spore of a moss, usually consisting of branching confervoid filaments, on any part of which stem and leaf buds may be developed.

Meaning of Protonema from wikipedia

- A protonema (plural: protonemata) is a thread-like chain of cells that forms the earliest stage of development of the gametophyte (the haploid phase)...
- its juvenile form, the protonema, under the influence of phytohormones (mainly cytokinins). Whereas the filamentous protonema grows by apical cell division...
- moss life-cycle starts with a haploid spore that germinates to produce a protonema (pl. protonemata), which is either a m**** of thread-like filaments or...
- of the moss. To ensure a maximum growth rate, the moss is kept at the protonema stage by continuous mechanical disruption, e.g. by using rotating blades...
- become thalloid, and can produce a few rhizoids. Soon afterwards, the protonema develops buds and these differentiate into its characteristic, erect,...
- spore germinates. In either case, the protonema is a transitory stage in the life of a hornwort. From the protonema grows the adult gametophyte, which is...
- haploid spore to produce a protonema, which is either a m**** of thread-like filaments or a flattened thallus. The protonema is a transitory stage in the...
- Helicobasidium brebissonii (Desm.) Donk (1958) Hypochnus purpureus Tul. (1865) Protonema brebissonii Desm. (1834) Rhizoctonia asparagi ****el (1870) Rhizoctonia...
- now placed in its own monotypic order, Mitteniales. It has luminescent protonema. Goffinet, B.; Buck, W. R.; Shaw, A. J. (2008). "Morphology and classification...
- growing on potato dextrose agar Knop agar is used to axenically culture protonema and whole moss plants, such as those of Physcomitrella patens, a model...