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''Phyllostachys nigra'', commonly known as black bamboo or purple bamboo ( zh, 紫竹), is a
species A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), ...
of
bamboo Bamboos are a diverse group of mostly evergreen perennial plant, perennial flowering plants making up the subfamily (biology), subfamily Bambusoideae of the grass family Poaceae. Giant bamboos are the largest members of the grass family, in th ...
,
native Native may refer to: People * '' Jus sanguinis'', nationality by blood * '' Jus soli'', nationality by location of birth * Indigenous peoples, peoples with a set of specific rights based on their historical ties to a particular territory ** Nat ...
to
Hunan Province Hunan is an inland province in Central China. Located in the middle reaches of the Yangtze watershed, it borders the province-level divisions of Hubei to the north, Jiangxi to the east, Guangdong and Guangxi to the south, and Guizhou and Chon ...
of
China China, officially the People's Republic of China (PRC), is a country in East Asia. With population of China, a population exceeding 1.4 billion, it is the list of countries by population (United Nations), second-most populous country after ...
, and is widely cultivated elsewhere. Growing up to tall by broad, it forms clumps of slender arching canes which turn black after two or three seasons. The abundant lance-shaped leaves are long. Numerous forms and
cultivars A cultivar is a kind of cultivated plant that people have selected for desired traits and which retains those traits when propagated. Methods used to propagate cultivars include division, root and stem cuttings, offsets, grafting, tissue cult ...
are available for garden use. The species and the form ''P. nigra'' f. ''henonis'' have both gained the
Royal Horticultural Society The Royal Horticultural Society (RHS), founded in 1804 as the Horticultural Society of London, is the UK's leading gardening charity. The RHS promotes horticulture through its five gardens at Wisley (Surrey), Hyde Hall (Essex), Harlow Carr ...
's
Award of Garden Merit The Award of Garden Merit (AGM) is a long-established award for plants by the British Royal Horticultural Society (RHS). It is based on assessment of the plants' performance under UK growing conditions. It includes the full range of cultivated p ...
. The form ''henonis'' is also known as Henon bamboo and as
cultivar A cultivar is a kind of Horticulture, cultivated plant that people have selected for desired phenotypic trait, traits and which retains those traits when Plant propagation, propagated. Methods used to propagate cultivars include division, root a ...
'Henon'.


Life cycle

Like many species of bamboo, black bamboo synchronizes its flowering, with flowering events happening every 40-120 years. According to one source, it has bloomed every 120 years "since records have been kept". It is
monocarpic Monocarpic plants are those that flower and set seeds only once, and then die. The term is derived from Greek (', "single" + , "fruit" or "grain"), and was first used by Alphonse de Candolle. Other terms with the same meaning are '' hapaxanth'' ...
, that is, after flowering, the plants die. Henon bamboo flowers every 120 years and is predicted to flower in the 2020s. Since it is widely distributed in Japan, dieback of its stands may cause serious social and environmental problems. Moreover, Henon bamboo rarely sets fertile seeds, so it is not clear how this species has survived over long periods in Japan.


Uses

It is used for
lumber Lumber is wood that has been processed into uniform and useful sizes (dimensional lumber), including beams and planks or boards. Lumber is mainly used for construction framing, as well as finishing (floors, wall panels, window frames). ...
(timber), food, and musical instruments, among other things, in areas of China where it is native and also worldwide.


Phytochemistry

A 2008 study from
Zhejiang University Zhejiang University (ZJU) is a public university, public research university in Hangzhou, Zhejiang, China. It is affiliated with the Ministry of Education (China), Ministry of Education. The university is part of Project 211, Project 985, and D ...
, in
China China, officially the People's Republic of China (PRC), is a country in East Asia. With population of China, a population exceeding 1.4 billion, it is the list of countries by population (United Nations), second-most populous country after ...
, isolated several
flavone Flavone is an organic compound with the formula . A white solid, flavone is a derivative of chromone with a phenyl (Ph) substituent adjacent to the ether group. The compound is of little direct practical importance, but substituted derivatives, ...
C-glycosides on black bamboo leaves, including
orientin Orientin is a flavone, a chemical flavonoid-like compound. It is the 8-C glucoside of luteolin. Natural occurrences Orientin is found in '' Adonis vernalis'', in ''Anadenanthera colubrina'' and ''Anadenanthera peregrina'', and in the ''Phyllos ...
,
homoorientin Isoorientin (homoorientin) is a flavone, a chemical flavonoid-like compound. It is the luteolin-6-''C''-glucoside. Natural occurrence Isoorientin can be isolated from the passion flower, '' Vitex negundo'', '' Terminalia myriocarpa'', the Aça ...
,
vitexin Vitexin is an apigenin flavone glucoside, a chemical compound found in the passion flower, ''Vitex agnus-castus'' (chaste tree or chasteberry), in the ''Phyllostachys nigra'' bamboo leaves, in the pearl millet (Pennisetum millet), and in Hawthor ...
and
isovitexin Isovitexin (homovitexin or saponaretin) is a flavone, namely the apigenin-6-''C''-glucoside. In this case, the prefix 'iso' does not imply an isoflavonoid (the position of the B-ring on the C-ring), but the position of the glucoside on the flavon ...
.Isolation and purification of four flavone C-glycosides from antioxidant of bamboo leaves by macroporous resin column chromatography and preparative high-performance liquid chromatography. Yu Zhang, Jingjing Jiao, Chengmei Liu, Xiaoqin Wu and Ying Zhang, ''
Food Chemistry Food chemistry is the study of chemical processes and interactions of all biological and non-biological components of foods. The biological substances include such items as meat, poultry, lettuce, beer, milk as examples. It is similar to biochemi ...
'', 1 April 2008,, Volume 107, Issue 3, Pages 1326–1336,


References


External links

* * * * nigra Endemic flora of China Flora of Hunan Grasses of China Garden plants of Asia Medicinal plants of Asia {{Bamboo-stub