摘要:
A method for managing resistance in a plot of pest resistant crop plants is provided herein. The method includes cultivating a first pest resistant crop plant in a plot in one planting cycle, and successively cultivating in a second planting cycle a second pest resistant crop plant in the same plot, wherein the first and the second pest resistant crop plants are pesticidal to corn rootworm but through a different mode of pesticidal action.
摘要:
The present invention discloses Resistance Management (RM) practices that are critical to safeguarding Bacillus thuringiensis as a natural resource and to sustaining genetically modified crops that express Bt toxins for managing ECB and WCRW. The methods involve blending seed transformed with a nucleic acid encoding a different pesticidal protein, where both proteins target the same pest, but use different modes of pesticidal action. The seed can be also treated with pesticidal agents.
摘要:
The sequence is disclosed both as the nucleic acid sequence SEQ ID NO: 1 and as the corresponding amino acid sequence SEQ ID NO: 7. Five other amino acid sequences are also disclosed, two from rice and three from Arabidopsis, SEQ ID NO: 2 through SEQ ID NO:6, respectively.
摘要翻译:该序列同时被公开为核酸序列SEQ ID NO:1,并作为相应的氨基酸序列SEQ ID NO:7。另外还公开了另外5个氨基酸序列,两个来自水稻,三个来自拟南芥,SEQ ID NO:2 通过SEQ ID NO:6。
摘要:
Plant cell expansion is regulated by wall relaxation and yielding, which is thought to be catalyzed by elusive "wall loosening" enzymes. By employing a reconstitution approach, we initially found that a crude protein extract from the cell walls of growing cucumber seedlings possessed the ability to induce the extension of isolated cell walls. This activity was restricted to the growing region of the stem and could induce the extension of isolated cell walls from various dicots and monocots, but was less effective on grass coleoptile walls. Sequential HPLC fractionation of the active wall extract revealed two proteins with molecular masses of 29 and 30 kD, as measured by SDS-PAGE, associated with such activity. Each protein, by itself, could induce wall extension without detectable hydrolytic breakdown of the wall We proposed the name "expansins" for this class of proteins. Expansins have been isolated from various plant sources including oat, cucumber, broccoli, celery, tomato, cotton, cabbage, and corn, and also from snail and its feces. These proteins weaken the intermolecular bonds between plant wall polysaccharides. They decrease the mechanical strength of commercial products made from polysaccharides, such as paper, and therefore present a novel approach in developing new technologies in industries which make use of such polysaccharides, such as in the paper industry, in the applications of polysaccharide gums and related products. These proteins moreover present a novel approach in the control of plant growth.
摘要:
The invention relates to crystal structure and activities of Beta-expansins and grass pollen allergens and identification of key regions essential to maximize activity and to identify sequence motifs which correlate with activity.
摘要:
The present invention relates to proteins belonging to a novel class of proteins designated as &bgr;-expansins, a composition comprising such proteins, isolated polynucleotides encoding &bgr;-expansins, methods for using the polynucleotides and proteins of the invention and methods for identifying, isolating and purifying expansins, including &agr; and &bgr;-expansins. Beta-expansins of the invention have the property of altering physical properties of a plant cell wall, such as for example by loosening or expanding plant cell walls.
摘要:
The present invention provides nucleic acids and polypeptide sequences for a novel class of expansin-related proteins, designated group 2/3 allergen, which comprise the group 2 and group 3 allergens from grass, a purified group 3 allergen Lol p 3, and method of using the nucleic acids sequences and proteins of the invention. Group 2/3 allergens of the invention are significant wall-loosening agents. They are capable of altering cell wall properties, which may effect growth, flexibility, and mechanical strength in tissues in which they are expressed.
摘要翻译:本发明提供了一种新型扩展蛋白相关蛋白的核酸和多肽序列,其命名为组2/3变应原,其包含来自草的组2和组3变应原,纯化组3变应原Lol p 3,以及方法 使用本发明的核酸序列和蛋白质。 本发明的组2/3变应原是显着的壁松动剂。 它们能够改变细胞壁性质,这可以影响其表达的组织中的生长,柔性和机械强度。
摘要:
Insect refuge strategies are described for the management of insect resistance development. The present invention relates generally to the control of pests that cause damage to crop plants, and in particular to corn plants, by their feeding activities directed to root damage, and more particularly to the control of such plant pests by exposing target pests to seeds or mixtures of seeds having multiple different modes of action. The first one or more transgenes and the second one or more transgenes are each, respectively, insecticidal to the same target insect but have different modes of action, and bind either semi-competitively or non-competitively to different binding sites in the target pest. In addition, the treatment of such seed with a chemical or peptide-associated pesticide prior to planting the seed is also disclosed.
摘要:
This invention relates to a new class of proteins called expansins, and methods related thereto are presented. This class of proteins can be characterized as catalysts of the extension of plant cell walls and the weakening of the hydrogen bonds in pure cellulose. Two proteins have been isolated from washed wall fragments of cucumber hypocotyls, referred to as “cucumber expansin-29” and “cucumber expansin-30”. Moreover, three peptide fragments from the purified cEx-29 protein were sequenced, then oligonucleotide primers were designed to amplify a portion of the expansin cDNA using polymerase chain reaction with a cDNA template derived from cucumber seedlings, and then the PCR fragment was used to screen a cDNA library to identify full length clones. Another expansin protein has been isolated from oat coleoptiles (oat expansin oEx-29), while three additional expansin sequences have been identified in Arabidopsis and an additional two in rice.
摘要:
A new class of proteins and methods related thereto are presented. The proteins, which can be characterized as catalysts of the extension of plant cell walls and the weakening of the hydrogen bonds in pure cellulose, are referred to as expansins. Two proteins have been isolated by fractionation techniques from washed wall fragments of cucumber hypocotyls, referred to as "cucumber expansin-29" and "cucumber expansin-30" (abbreviated cEx-29 and cEx-30, with respect to their apparent relative masses as determined by SDS-PAGE). Moreover, three peptide fragments from the purified cEx-29 protein were sequenced, then oligonucleotide primers were designed to amplify a portion of the expansin cDNA using polymerase chain reaction with a cDNA template derived from cucumber seedlings, and then the PCR fragment was used to screen a cDNA library to identify full length clones. Another expansin protein has been isolated from oat coleoptiles (oat expansin oEx-29), while three additional expansin sequences have been identified in Arabidopsis and an additional two in rice. Expansins appear to be broadly distributed throughout the plant kingdom and can be identified in stem and leaf vegetables (i.e., broccoli, cabbage), fruit and seed vegetables (i.e., tomato), fiber crops and cereals (i.e., corn), and forest and ornamental crops (i.e., cotton). An expansin, generally, is a protein which has at least about 60% sequence similarity with the amino acid sequence shown in SEQ. ID. NO:1, and preferably has at least about 70% sequence similarity with SEQ. ID. NO:1.
摘要翻译:提出了一类新的相关蛋白质和方法。 可以表征为植物细胞壁延伸的催化剂和纯纤维素中氢键的弱化的蛋白质被称为膨胀物。 通过分离技术从黄瓜下胚轴的洗涤壁片段(称为“黄瓜扩展蛋白-29”和“黄瓜扩展子30”)(缩写为cEx-29和cEx-30),通过分离技术分离了两种蛋白质,其相对于其表观相对质量为 通过SDS-PAGE测定)。 此外,对来自纯化的cEx-29蛋白的三个肽片段进行测序,然后设计寡核苷酸引物以使用来自黄瓜幼苗的cDNA模板进行聚合酶链反应扩增一部分扩展蛋白cDNA,然后使用PCR片段筛选 一个cDNA文库,用于鉴定全长克隆。 另外一种扩增蛋白已经从燕麦胚芽鞘(oat expansin oEx-29)中分离出来,而在拟南芥中已经鉴定了三种扩增蛋白序列,另外两种在水稻中被鉴定出来。 扩展体似乎广泛分布在整个植物界,可以在茎叶蔬菜(即西兰花,卷心菜),水果和种子蔬菜(即番茄),纤维作物和谷类(即玉米),以及森林和 观赏作物(即棉花)。 通常,扩展蛋白是与SEQ ID NO:1所示氨基酸序列具有至少约60%序列相似性的蛋白质。 ID。 NO:1,优选与SEQ ID NO:1至少约70%的序列相似性。 ID。 NO:1。