pseudobulb

　

WordNet

1. a solid bulblike enlargement of the stem of some orchids

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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2014/09/29 13:32:47」(JST)

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The pseudobulb is a storage organ derived from the part of a stem between two leaf nodes.

It applies to the orchid family (Orchidaceae), specifically certain groups of epiphytic orchids, and may be single or composed of several internodes with evergreen or deciduous leaves along its length.

In some species, it is hardly swollen at all and looks like a normal stem with many leaves while at the other extreme, some genera such as Bulbophyllum have single, spherical pseudobulbs with one (or two) leafs at the apex of each.

Whether cane-like (with many joints) or spherical (with one or few joints), they are all produced from a long lived creeping stem called a rhizome which may itself be climbing or pendulous.

The pseudobulbs are themselves relatively short lived (1–5 years), but are continually produced from the growing tip of the rhizome.

The other growth habit used by tropical epiphytic orchids is known as monopodial.

References

English Journal

• The first trimeric Galanthus nivalis agglutinin-related lectin of Orchidaceae was found in Dendrobium pendulum: purification, characterization, and effects of stress factors.

• Siripipatthana P1, Phaonakrop N, Roytrakul S, Senawong G, Mudalige-Jayawickrama RG, Sattayasai N.
• Plant cell reports.Plant Cell Rep.2015 Jul;34(7):1253-62. doi: 10.1007/s00299-015-1785-x. Epub 2015 Apr 19.
• KEY MESSAGE: Trimeric Galanthus nivalis agglutinin-related lectin of Orchidaceae with two conformational forms was first studied in Dendrobium pendulum . It was highly expressed by stress factors. Using mannan-agarose column chromatography, a mannose-binding protein was purified from Dendrobium pend
• PMID 25893876

• [Effect of yanghe huayan decoction on precancerosis of breast cancer, protein and mRNA expression of ki67: an experimental research].

• Li JW, Liu XF, Chen HZ, Chen HH, Shi GX, Wang SJ.
• Zhongguo Zhong xi yi jie he za zhi Zhongguo Zhongxiyi jiehe zazhi = Chinese journal of integrated traditional and Western medicine / Zhongguo Zhong xi yi jie he xue hui, Zhongguo Zhong yi yan jiu yuan zhu ban.Zhongguo Zhong Xi Yi Jie He Za Zhi.2014 Aug;34(8):970-5.
• OBJECTIVE: To explore the effect of Yanghe Huayan Decoction (YHD, a representative recipe for warming yang mass dissipating) in inhibiting precancerosis of breast cancer (PBC) and on the protein and mRNA expression of ki67.METHODS: The PBC rat model was established by dimethylbenzanthracene (DMBA),
• PMID 25223183

• Antimicrobial activity of cold and hot successive pseudobulb extracts of Flickingeria nodosa (Dalz.) Seidenf.

• Nagananda GS1, Satishchandra N2.
• Pakistan journal of biological sciences : PJBS.Pak J Biol Sci.2013 Oct 15;16(20):1189-93.
• Flickingeria nodosa (Dalz.) Seidenf is a medicinally important orchid plant. It is used for the treatment of asthma, bronchitis, throat infections, dermatological infections and also used as blood purifier. Based on its importance the present study was designed to evaluate its antibacterial and anti
• PMID 24506021

Japanese Journal

• Carbohydrate mobilization and gene regulatory profile in the pseudobulb of Oncidium orchid during the flowering process

• WANG C. Y.
• Planta 227, 1063-1077, 2008
• NAID 80019463272

• Isolation and Characterization of a Pure Mannan from Oncidium (cv. Gower Ramsey) Current Pseudobulb during Initial Inflorescence Development

• Wang Heng-Long,Yeh Kai-Wun,Chen Peng-Ren [他],CHANG Chih-hao,CHEN Jin-Mei,KHOO Kay-Hooi
• Bioscience, biotechnology, and biochemistry 70(2), 551-553, 2006-02-23
• A water-soluble and neutral polysaccharide was extracted from the current pseudobulbs of <I>Oncidium</I> "Gower Ramsey" during the early inflorescence stage (flower stalk less than 4 cm) b …
• NAID 10018534766

• シンビジウムのリード発育時における^<13>C同化物の各器官への分配・転流

• 米田 和夫,小森 照彦,千野 浩二 [他],五味 亜矢子,小牧 祐子
• 園芸学会雑誌 74(2), 176-178, 2005-03-15
• Cymbidium Walu 'Green Heart'のリードまたは親株の葉に^<13>Cを供与し, 親株とそれから発生した2つのリード間の^<13>C同化物の転流について検討した.リードの葉に供与した場合, 転流の多くは供与9日後以降であった.供与12日後の^<13>C転流率は, 同化葉が51.2%と最も多く, 無供与の親株の根とリードの葉でそれぞれ14.2 …
• NAID 10015435005

Related Links

• Pseudobulbs - definition of Pseudobulbs by The Free Dictionary

pseu·do·bulb (so o′dō-bŭlb′) n. A thickened, bulbous portion of the stem in many orchids. pseudobulb (ˈsjuːdəʊˌbʌlb) n (Botany) (in many tropical and epiphytic orchids) a bulb-like swelling of a stem Thesaurus Antonyms Related Words Synonyms ...

• Pseudobulb | Define Pseudobulb at Dictionary.com

Pseudobulb definition, an enlarged, aboveground portion of stem, present in many tropical orchids, in which moisture is stored. See more. ... People invent new words all the time, but which ones actually make it?

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