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Citrus Greening Disease
Citrus greening disease ( abbr. HLB) is a disease of citrus caused by a vector-transmitted pathogen. The causative agents are motile bacteria, '' Liberibacter'' spp. The disease is transmitted by the Asian citrus psyllid, '' Diaphorina citri'', and the African citrus psyllid, '' Trioza erytreae''. It has no known cure. It is graft-transmissible. There are three different types of the disease: a heat-tolerant Asian form, and the heat-sensitive African and American forms. It was first described in 1929, and first reported in South China in 1943. The African variation was first reported in 1947 in South Africa, where it is still widespread. It reached Florida in 2005, and within three years had spread to the majority of citrus farms. The rapid increase in this disease has threatened the citrus industry in the entire US. As of 2009, 33 countries had reported the infection in their citrus crop. Symptoms Citrus greening is distinguished by the common symptoms of yellowing of the v ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mandarin Orange
A mandarin orange (''Citrus reticulata''), often simply called mandarin, is a small, rounded citrus tree fruit. Treated as a distinct species of orange, it is usually eaten plain or in fruit salads. The mandarin is small and oblate, unlike the roughly spherical sweet orange (which is a mandarin- pomelo hybrid). The taste is sweeter and stronger than the common orange. A ripe mandarin orange is firm to slightly soft, heavy for its size, and pebbly-skinned. The peel is thin and loose, with little white mesocarp, so they are usually easier to peel and to split into segments. Hybrids have these traits to lesser degrees. The mandarin orange is tender and is damaged easily by cold. It can be grown in tropical and subtropical areas. According to genetic studies, the wild mandarin was one of the original citrus species; through breeding or natural hybridization, it is the ancestor of many hybrid citrus cultivars. With the citron and pomelo, it is the ancestor of the most commerci ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chaozhou
Chaozhou ( zh, t=潮州), alternatively Chiuchow, Chaochow or Teochew, is a city in the eastern Guangdong province of China. It borders Shantou to the south, Jieyang to the southwest, Meizhou to the northwest, the province of Fujian to the east, and the South China Sea to the southeast. It is administered as a prefecture-level city with a jurisdiction area of and a total population of 2,568,387. It is also the ancestral hometown of 2.7 million overseas Teochow people. Along with Shantou and Jieyang, Chaozhou is a cultural center of the Chaoshan region. History The Chenqiaobei Hill Site was discovered in the west of Chaozhou City. The unearthed cultural relics show that the ancestors of Chaozhou had already started a life of fishing, farming and hunting about 6,000-5,000 years ago. During the Shang and Zhou Dynasties, the Fubin Culture in Raoping was a representative example, indicating that this place had entered the bronze and agricultural civilization. In 214 BC, Chaozhou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Texas AgriLife Research
Texas A&M AgriLife Research is the agricultural and life sciences research agency of the U.S. state of Texas and a part of the Texas A&M University System. Formerly named Texas Agricultural Research Service, the agency's name was changed January 1, 2008, as part of a rebranding of Texas A&M AgriLife (formerly Texas A&M Agriculture). The A&M was formally added to the agency's name on September 1, 2012, as part of a branding effort by the Texas A&M University System to strengthen the association between the agencies and Texas A&M University. The agricultural experiment station division is headquartered at Texas A&M's flagship campus in College Station, Texas. Texas A&M AgriLife Research serves all 254 Texas counties and operates 15 research centers throughout the state. Texas A&M AgriLife Research specialists in beef cattle have produced the world's largest set of gene-mapping resources for beef cattle and have cloned what is believed to be the first animal—a calf—specificall ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genetically Modified Organism
A genetically modified organism (GMO) is any organism whose genetic material has been altered using genetic engineering techniques. The exact definition of a genetically modified organism and what constitutes genetic engineering varies, with the most common being an organism altered in a way that "does not occur naturally by mating and/or natural Recombination (biology), recombination". A wide variety of organisms have been genetically modified (GM), including animals, plants, and microorganisms. Genetic modification can include the introduction of new genes or enhancing, altering, or Gene knockout, knocking out endogenous genes. In some genetic modifications, genes are transferred Cisgenesis, within the same species, across species (creating transgenic organisms), and even across Kingdom (biology), kingdoms. Creating a genetically modified organism is a multi-step process. Genetic engineers must isolate the gene they wish to insert into the host organism and combine it with o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rutaceae
The Rutaceae () is a family (biology), family, commonly known as the rueRUTACEAE in BoDD – Botanical Dermatology Database or citrus family, of flowering plants, usually placed in the order (biology), order Sapindales. Species of the family generally have flowers that divide into four or five parts, usually with strong scents. They range in form and size from Herbaceous plant, herbs to shrubs and large trees. The most economically important genus in the family is ''Citrus'', which includes the Orange (fruit), orange (''C.'' × ''sinensis''), lemon (''C.'' × ''limon''), grapefruit (''C.'' × ''paradisi''), and Lime (fruit), lime (various). ''Boronia'' is a large Australian genus, some members of which are plants with highly fragrant flowers and are used in commercial Essential oil, oil production. Other l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The New York Times
''The New York Times'' (''NYT'') is an American daily newspaper based in New York City. ''The New York Times'' covers domestic, national, and international news, and publishes opinion pieces, investigative reports, and reviews. As one of the longest-running newspapers in the United States, the ''Times'' serves as one of the country's Newspaper of record, newspapers of record. , ''The New York Times'' had 9.13 million total and 8.83 million online subscribers, both by significant margins the List of newspapers in the United States, highest numbers for any newspaper in the United States; the total also included 296,330 print subscribers, making the ''Times'' the second-largest newspaper by print circulation in the United States, following ''The Wall Street Journal'', also based in New York City. ''The New York Times'' is published by the New York Times Company; since 1896, the company has been chaired by the Ochs-Sulzberger family, whose current chairman and the paper's publ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
California
California () is a U.S. state, state in the Western United States that lies on the West Coast of the United States, Pacific Coast. It borders Oregon to the north, Nevada and Arizona to the east, and shares Mexico–United States border, an international border with the Mexico, Mexican state of Baja California to the south. With almost 40million residents across an area of , it is the List of states and territories of the United States by population, largest state by population and List of U.S. states and territories by area, third-largest by area. Prior to European colonization of the Americas, European colonization, California was one of the most culturally and linguistically diverse areas in pre-Columbian North America. European exploration in the 16th and 17th centuries led to the colonization by the Spanish Empire. The area became a part of Mexico in 1821, following Mexican War of Independence, its successful war for independence, but Mexican Cession, was ceded to the U ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Réunion
Réunion (; ; ; known as before 1848) is an island in the Indian Ocean that is an overseas departments and regions of France, overseas department and region of France. Part of the Mascarene Islands, it is located approximately east of the island of Madagascar and southwest of the island of Mauritius. , it had a population of 896,175. Its capital and largest city is Saint-Denis, La Réunion, Saint-Denis. Réunion was uninhabited until French immigrants and colonial subjects settled the island in the 17th century. Its tropical climate led to the development of a plantation economy focused primarily on sugar; slaves from East Africa were imported as fieldworkers, followed by Malays, Annamite, Vietnamese, Chinese, and Indians as indentured laborers. Today, the greatest proportion of the population is of mixed descent, while the predominant language is Réunion Creole, though French remains the sole official language. Since 1946, Réunion has been governed as a regions of France, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ryukyu Islands
The , also known as the or the , are a chain of Japanese islands that stretch southwest from Kyushu to Geography of Taiwan, Taiwan: the Ryukyu Islands are divided into the Satsunan Islands (Ōsumi Islands, Ōsumi, Tokara Islands, Tokara and Amami Islands, Amami) and Okinawa Prefecture (Daitō Islands, Daitō, Miyako Islands, Miyako, Yaeyama Islands, Yaeyama, Senkaku Islands, Senkaku, Okinawa Islands, Okinawa, Sakishima Islands (further divided into the Miyako Islands, Miyako and Yaeyama Islands), and Yonaguni as the westernmost). The larger ones are mostly volcanic islands and the smaller mostly coral island, coral. The largest is Okinawa Island. The climate of the islands ranges from humid subtropical climate (Köppen climate classification ''Cfa'') in the north to tropical rainforest climate (Köppen climate classification ''Af'') in the south. Precipitation is very high and is affected by the rainy season and typhoons. Except the outlying Daitō Islands, the island chain ha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tropical
The tropics are the regions of Earth surrounding the equator, where the sun may shine directly overhead. This contrasts with the temperate or polar regions of Earth, where the Sun can never be directly overhead. This is because of Earth's axial tilt; the width of the tropics (in latitude) is twice the tilt. The tropics are also referred to as the tropical zone and the torrid zone (see geographical zone). Due to the overhead sun, the tropics receive the most solar energy over the course of the year, and consequently have the highest temperatures on the planet. Even when not directly overhead, the sun is still close to overhead throughout the year, therefore the tropics also have the lowest seasonal variation on the planet; "winter" and "summer" lose their temperature contrast. Instead, seasons are more commonly divided by precipitation variations than by temperature variations. The tropics maintain wide diversity of local climates, such as rain forests, monsoons, sa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Citrus Psyllid, Adult, Side, Recently Emerged, Ft
''Citrus'' is a genus of flowering plant, flowering trees and shrubs in the family Rutaceae. Plants in the genus produce citrus fruits, including important crops such as Orange (fruit), oranges, Mandarin orange, mandarins, lemons, grapefruits, pomelos, and lime (fruit), limes. ''Citrus'' is native to South Asia, East Asia, Southeast Asia, Melanesia, and Australia. Indigenous peoples, Indigenous people in these areas have used and domesticated various species since ancient times. Its cultivation first spread into Micronesia and Polynesia through the Austronesian expansion (–1500 BCE). Later, it was spread to the Middle East and the Mediterranean () via the incense trade route, and from Europe to the Americas. Renowned for their highly fragrant aromas and complex flavor, citrus are among the most popular fruits in cultivation. With a propensity to hybridize between species, making their taxonomy complicated, there are numerous varieties encompassing a wide range of appearance ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gracilicutes
Gracilicutes (Latin: ''gracilis'', slender, and ''cutis'', skin, referring to the cell wall) is a clade in bacterial phylogeny. Traditionally gram staining results were most commonly used as a classification tool, consequently until the advent of molecular phylogeny, the Kingdom Monera (as the domains Bacteria and Archaea were known then) was divided into four phyla, * Gracilicutes (gram-negative, it is split in many groups, but some authors still use it in a narrower sense) * Firmacutes ic(gram-positive, subsequently corrected to Firmicutes, today it excludes the Actinomycetota) * Mollicutes (gram variable, later renamed Tenericutes and now Mycoplasmatota, e.g. ''Mycoplasma'') * Mendosicutes (uneven gram stain, "methanogenic bacteria" now known as methanogens and classed as Archaea) This classification system was abandoned in favour of the three-domain system based on molecular phylogeny started by C. Woese. Using hand-drawn schematics rather than standard molecular phylogen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
