An 'albino' redwood is a redwood tree which is unable to produce chlorophyll, and has white needles instead of the normal green. It survives by obtaining sugar through the connections between its roots and those of neighboring normal redwood(s), usually the parent tree from whose base it has sprouted. Sap exchange through roots is a general phenomenon among redwoods. About 400 are known. They can be found in Henry Cowell Redwoods State Park, Humboldt Redwoods State Park, and The Santa Lucia Preserve, with eleven trees in the first. The exact locations are not publicized to protect the rare trees. They reach a maximum height of about 20 m (66 ft). Other conifers lack the ability to graft their roots, so 'albino' mutants of other species do not survive to become sizable trees.
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| - سيكويا دائمة الخضرة أبرص (ar)
- Albino redwood (en)
- Секвойя-альбинос (ru)
- Секвоя-альбінос (uk)
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| - سيكويا دائمة الخضرة أبرص (بالإنجليزية: Albino redwood) هي نوع شجر السيكويا دائمة الخضرة يدعى غير قادر تماماً على إنتاج الكلوروفيل اللازم للتمثيل الضوئي ولكي تحل هذه الشجرة تلك المشكلة تقوم بربط جذورها مع جذور السيكويا العملاقة دائمة الخضرة وتعيش كامل حياتها متطفلة عليها. (ar)
- Секвоя-альбінос — секвоя, що нездатна виробляти хлорофіл, тому вона має білі голки замість звичайних зелених. (uk)
- An 'albino' redwood is a redwood tree which is unable to produce chlorophyll, and has white needles instead of the normal green. It survives by obtaining sugar through the connections between its roots and those of neighboring normal redwood(s), usually the parent tree from whose base it has sprouted. Sap exchange through roots is a general phenomenon among redwoods. About 400 are known. They can be found in Henry Cowell Redwoods State Park, Humboldt Redwoods State Park, and The Santa Lucia Preserve, with eleven trees in the first. The exact locations are not publicized to protect the rare trees. They reach a maximum height of about 20 m (66 ft). Other conifers lack the ability to graft their roots, so 'albino' mutants of other species do not survive to become sizable trees. (en)
- Секвойя-альбинос (англ. Albino redwood) — это секвойя (Sequoia sempervirens), которая не в состоянии производить хлорофилл из-за генетических мутаций, поэтому имеет белые иглы вместо обычных зеленых. Чтобы выжить, такому дереву необходимо паразитировать на других растениях — секвойя присоединяет свои корни к корневой системе здоровых деревьев, от которых получает питание. В природе известно порядка 60 экземпляров секвой-альбиносов, которые растут в государственных парках США — Henry Cowell Redwoods State Park и Humboldt Redwoods State Park. Точное место их произрастания не афишируется, чтобы защитить деревья от вандалов и браконьеров. В высоту они достигают всего 20 метров (66 футов), что гораздо ниже обычных секвой, и срок их жизни меньше. (ru)
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| - سيكويا دائمة الخضرة أبرص (بالإنجليزية: Albino redwood) هي نوع شجر السيكويا دائمة الخضرة يدعى غير قادر تماماً على إنتاج الكلوروفيل اللازم للتمثيل الضوئي ولكي تحل هذه الشجرة تلك المشكلة تقوم بربط جذورها مع جذور السيكويا العملاقة دائمة الخضرة وتعيش كامل حياتها متطفلة عليها. (ar)
- An 'albino' redwood is a redwood tree which is unable to produce chlorophyll, and has white needles instead of the normal green. It survives by obtaining sugar through the connections between its roots and those of neighboring normal redwood(s), usually the parent tree from whose base it has sprouted. Sap exchange through roots is a general phenomenon among redwoods. About 400 are known. They can be found in Henry Cowell Redwoods State Park, Humboldt Redwoods State Park, and The Santa Lucia Preserve, with eleven trees in the first. The exact locations are not publicized to protect the rare trees. They reach a maximum height of about 20 m (66 ft). Other conifers lack the ability to graft their roots, so 'albino' mutants of other species do not survive to become sizable trees. The trees were important to Native Americans and were recorded in their legends. For example, the Pomo people used them in their cleansing ceremonies. Albino redwoods are generally regarded as parasitic plants, but as of 2016 one researcher speculates that they are supported by other trees for their role in storing toxic heavy metals. Albinos apparently accumulate more metals than normal trees because of defective stomata, which cause them to lose more water through transpiration, forcing them to compensate by taking up more water through their roots. Six phenotypes of albino redwood have been classified: white, bright yellow, cellular virescent green, pale green, mottled and nonchimeric variegated. Such mutants can be either basal (growing from a burl at the base of a tree) or aerial (branching off from a tree above the ground). The bright yellow form is exclusively aerial and is thought to be associated with excess xanthophyll production. The pale green form lacks just one specific type of chlorophyll and is almost always basal. Cellular virescent green trees have a few normal cells (whose abundance may vary over time) interspersed among the mutant cells. Ten cases are known of chimeric redwoods that have a mosaic of albino and normal tissues. Only a single chimeric redwood is known to produce cones. Formerly threatened by the Sonoma–Marin Area Rail Transit rail development, it has since been replanted. Three phenotypes of chimeric redwoods have been noted: sectorial, mericlinal and periclinal. In sectorial mutants, albino cells are present vertically through all cell layers, with genotype boundaries usually parallel to the stem. Mericlinal trees have mutant cells in only some cell layers and have an unstable phenotype; the albino cells can disappear and reappear in successive years. A periclinal chimera has both mutant and normal cells distributed horizontally across the tip of each bud propagating at equal rates, leading to a very stable phenotype.
* An 'albino' redwood in Humboldt Redwoods State Park, northern California
* Another example in Humboldt Redwoods State Park
* Albino foliage in the Santa Cruz Mountains, California
* Example in the Santa Cruz Mountains
* Example of an Albino Redwood tree in Mongomery Redwood State Preserve (en)
- Секвойя-альбинос (англ. Albino redwood) — это секвойя (Sequoia sempervirens), которая не в состоянии производить хлорофилл из-за генетических мутаций, поэтому имеет белые иглы вместо обычных зеленых. Чтобы выжить, такому дереву необходимо паразитировать на других растениях — секвойя присоединяет свои корни к корневой системе здоровых деревьев, от которых получает питание. В природе известно порядка 60 экземпляров секвой-альбиносов, которые растут в государственных парках США — Henry Cowell Redwoods State Park и Humboldt Redwoods State Park. Точное место их произрастания не афишируется, чтобы защитить деревья от вандалов и браконьеров. В высоту они достигают всего 20 метров (66 футов), что гораздо ниже обычных секвой, и срок их жизни меньше. Секвойи-альбиносы были уважаемы среди коренных народов Северной Америки, о них говорилось в легендах. Известны также несколько случаев, когда секвойя имеет мозаику из зелёных и белых иголок. Из таких деревьев-химер учёным известно только одно, которое имело шишки, то есть дало плоды.
* Молодая поросль
* Обычной секвойи
* Секвойи-альбиноса (ru)
- Секвоя-альбінос — секвоя, що нездатна виробляти хлорофіл, тому вона має білі голки замість звичайних зелених. (uk)
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