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Annona squamosa is a small, well-branched tree or shrub [7] from the family Annonaceae that bears edible fruits called sugar apples or sweetsops. [8] It tolerates a tropical lowland climate better than its relatives Annona reticulata and Annona cherimola [6] (whose fruits often share the same name) [3] helping make it the most widely cultivated of these species. [9]
Annona × atemoya Mabb. The atemoya , Annona × atemoya , or Annona squamosa × Annona cherimola is a hybrid of two fruits – the sugar-apple ( Annona squamosa ) and the cherimoya ( Annona cherimola ) – which are both native to the American tropics . [ 1 ]
Annona or Anona (from Taíno annon) is a genus of flowering plants in the pawpaw/sugar apple family, Annonaceae. It is the second largest genus in the family after Guatteria , [ 3 ] containing approximately 166 [ 4 ] species of mostly Neotropical and Afrotropical trees and shrubs .
The acetogenin compounds, which occur in the fruit, seeds, and leaves of many Annonaceae, including soursop (Annona muricata), are neurotoxins and seem to be the cause of a neurodegenerative disease. The disorder is a so-called tauopathy associated with a pathologic accumulation of tau protein in the brain.
Annonacin is a disabling and potentially lethal neurotoxin. [4] [5] [6] Like other acetogenins, it is a mitochondrial complex I (NADH-dehydrogenase) inhibitor. [5]As NADH-dehydrogenase is responsible for the conversion of NADH to NAD+ as well as the establishment of a proton gradient in the mitochondria, annonacin disables the ability of a cell to generate ATP through oxidative phosphorylation ...
Annona reticulata is a small deciduous or semi-evergreen tree in the plant family Annonaceae. [5] It is best known for its fruit, called custard apple , [ 2 ] a common name shared with fruits of several other species in the same genus: A. cherimola [ 6 ] and A. squamosa . [ 7 ]
New leaves are whitish below. [12] Leaves are single and alternate, dark green, and slightly hairy on the top surface. [9] They attach to branches with stout 6–10 mm (0.24–0.39 in) long and densely hairy leaf stalks. [11] Cherimoya trees bear very pale green, [12] fleshy flowers. They are 3 cm (1.2 in) long [10] with a very strong, fruity ...
The alkaloid was first isolated from the bark of the Annona reticulata. It has since been found in Annona squamosa, the leaves of Michelia × alba, Fissistigma latifolium and Goniothalamus australis, among many others. [1] The compound may be obtained by dry roasting the bark of Annona reticulata and extracting with methanol.