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Há 2 dias · Aphid saliva may inhibit phloem-sealing mechanisms and has pectinases that ease penetration. [32] Non-host plants can be rejected at any stage of the probe, but the transfer of viruses occurs early in the investigation process, at the time of the introduction of the saliva, so non-host plants can become infected. [31]
Há 1 dia · Part (s) of plant. Fruit. Uses. Food. A banana is an elongated, edible fruit – botanically a berry [1] – produced by several kinds of large herbaceous flowering plants in the genus Musa. In some countries, cooking bananas are called plantains, distinguishing them from dessert bananas. The fruit is variable in size, color, and firmness, but ...
Há 2 dias · Folotsia ambovombenseS. Liede. Cynanchum ambovombense[ 1] är en oleanderväxtart som först beskrevs av S. Liede, och fick sitt nu gällande namn av Liede och Meve. Cynanchum ambovombense ingår i släktet Cynanchum och familjen oleanderväxter. [ 2][ 3] Inga underarter finns listade i Catalogue of Life. [ 2]
Há 1 dia · MicroRNA ( miRNA) are small, single-stranded, non-coding RNA molecules containing 21 to 23 nucleotides. [1] Found in plants, animals and some viruses, miRNAs are involved in RNA silencing and post-transcriptional regulation of gene expression. [2] [3] miRNAs base-pair to complementary sequences in mRNA molecules, [4] then silence said mRNA molecules by one or more of the following processes ...
Há 2 dias · The U.S. is one of 17 megadiverse countries containing large numbers of endemic species: about 17,000 species of vascular plants occur in the contiguous United States and Alaska, and over 1,800 species of flowering plants are found in Hawaii, few of which occur on the mainland. [181]
Há 2 dias · A protein is a polyamide. Secondary structure: regularly repeating local structures stabilized by hydrogen bonds. The most common examples are the α-helix, β-sheet and turns. Because secondary structures are local, many regions of different secondary structure can be present in the same protein molecule.
Há 2 dias · Plants vs. Zombies is a 2009 tower defense video game developed and published by PopCap Games. First released for Windows and Mac OS X, the game has since been ported to consoles, handhelds, and mobile devices. The player takes the role of a homeowner amid a zombie apocalypse. As a horde of zombies approaches along several parallel lanes, the ...
