¡Jitomates cultivados en casa! En la foto se pueden apreciar 3 frutos en diferentes estadíos de madurez ¡Toma en cuenta que todo empieza con la polinización de una flor! Por cierto, sabe delicioso 👌.
(Y sin plaguicidas).
_______________________________________ Tomatoes harvested at home. In the picture you can see 3 fruits which are in a different stage of maturity. Consider that this begins with the polinization of a flower! Oh, by the way... it's delicious! 😋
(And without pesticides). #harvest#home#tomatoes#organic#agriculture#biology#green
Hey guys I know you’re wondering why this page is following you! My name is Keaira Gamble and I am a pre-med student at Wright State University in Ohio and I’m an aspiring doctor! I know right exciting! So this page will primarily be about my journey from a pre-led student up until I am finally admitted into a Medical School! Feel free to DM me with any questions, comments or concerns! Thank you! 💉💊 #medicine#doctors#urology#futuredoctor#premed#premedstudent#biology#science
Mixotrophy is when an organism can acquire energy from different sources and through evolution plants became master chemists. Epipactis, Cephalanthera, Plantanthera, Pyrola, Chimaphila, have all shown they receive carbon from mycorrhizal fungi. These species are a unique hybrid of autotrophs mixed with heterotrophy and they truly get the best of both worlds. As fascinating as mixotrophy is it is poorly studied, particularly in land plants. Hemiparasites like mistletoe can produce their own photosynthates and can obtain up to 63% of carbon from a host. Another perk of being a mixotrophic plant is that nitrogen abundance is higher compared to autotrophic plants (doi.org/10.1016/j.tplants.2008.11.004). Nitrogen is hard to obtain for plants even though nitrogen is abundant in our atmosphere. Plants really have life figured out. Plants know that the best packages in life come in twos: The plant world and the underground fungal network.
1 3525 minutes ago
-Nombre común: Caracol
-Nombre científico: Helix
~Es una especie de molusco gaterópodo pulmonado originario de Europa.
Generalmente es activo de noche aunque en lugares húmedos, oscuros o días lluviosos se le puede ver en movimiento.
Este individuo ha generado grandes problemas tanto en Europa como en las zonas en las cuales fue introducido ya que por su dieta basada en vegetales de consumo humano (lechugas o plantas en general) sumado con su amplia cantidad de individuos presentes ha derivado a que esta se convierta en una plaga para las cosechas.
“We feel the beauty of nature because we are part of nature and because we know that however much in our separate domains we abstract from the unity of Nature, this unity remains.” Quote by Ernest Everett Just
He exudes refinement, his suit, his posture, and his demeanour speak to his gentlemanly status.
Born on August 14, 1883, in Charleston, South Carolina, Earnest Everett Just was a biologist and educator best known for his pioneering work on physiology of development, fertilization, experimental parthenogenesis, hydration, cell division, dehydration in living cells and ultraviolet carcinogenic radiation effects on cells. .
This bright young man earned the highest grades in Greek during his freshman year, and was selected as a Rufus Choate scholar for two years. He graduated as the sole magna cum laude student in 1907, also receiving honors in botany, sociology and history. He pioneered in medical education at Howard University by incorporating research methods into medical school courses. He received numerous grants from the Rockefeller Foundation, the General Education Board and other groups to support his research. He also studied marine biology and through meticulous research he conducted there, Just became known as a leading authority on the embryology of marine animals. .
Starting in 1929, he travelled to Europe conducting research in Germany, France, and Italy. Europe remained the center of his activity until the German occupation of France. In 1940, the German Nazis imprisoned Just in a camp, but, with the help of his wife’s father, he was released.
Just's legacy of accomplishments followed him long after his death, on October 27, 1941. Photograph c.1900s. .
Methods to promote myelin regeneration in response to central myelin loss are essential to prevent the progression of clinical disability in demyelinating diseases. The neurotrophin brain-derived neurotrophic factor (BDNF) is known to promote myelination during development via oligodendrocyte expressed TrkB receptors. Here, we use a structural mimetic of BDNF to promote myelin regeneration in a preclinical mouse model of central demyelination. In female mice, we show that selective targeting of TrkB with the BDNF-mimetic enhances remyelination, increasing oligodendrocyte differentiation, the frequency of myelinated axonsnd myelin sheath thickness after a demyelinating insult. Treatment with exogenous BDNF exerted an attenuated effect, increasing myelin sheath thickness only. Further, following conditional deletion of TrkB from pre-myelinating oligodendrocytes, we show the effects of the BDNF-mimetic on oligodendrocyte differentiation and remyelination are lost, indicating these are dependent on oligodendrocyte expression of TrkB. Overall, these studies demonstrate that targeting oligodendrocyte TrkB promotes in vivo remyelination in the brain.
Novel strategies to promote myelin regeneration are required to prevent progressive neurodegeneration and clinical disability in patients with central demyelinating disease. Here, we test if selectively targeting the TrkB receptor on the myelin-producing oligodendrocytes, can promote remyelination in the brain. Using a structural mimetic of its native ligand, BDNF, we show that stimulation of TrkB enhances remyelination, increasing oligodendrocyte differentiation, the frequency of myelinated axons and thickness of the myelin sheath following a demyelinating insult. Further, we show that these effects are dependent on the phosphorylation of oligodendrocyte expressed TrkB receptors in vivo. Overall, we demonstrate that selective targeting of TrkB has therapeutic potential to promote remyelination in the brain.
A photo of this orphaned elephant getting his daily supplements to grow big and strong. This is at David Sheldrick Wildlife Trust located in Kenya. Baby elephants are often left without a family mostly due to poachers so here they rescue and rehabilitate them to eventually release them into the wild. Once they are of age they are put out where other herds of elephants are and (though it doesn’t happen the first time) eventually a passing herd accepts them as one their own!
Esse carinha aí na foto é besouro que pertence a família Sacarabaeidae, inserido na subfamília Cetoniinae, e é da espécie Euphoria lurida. São comumente conhecidos como besouro das flores ou das frutas, e são encontrados assim, em flores, em frutos maduros ou em decomposição e até em exsudatos vegetais. Nesse caso aí, a planta que foi encontrado pertence a família Verbenaceae, é uma Lantana camara. Esse carinha é mais esperto que a borboleta que buscam alimento nessas flores de forma delicada e sutil, eles chegam destruindo tudo e não ligam pras coleguinhas que virão, e diminuindo o sucesso reprodutivo da plantinha. Mas esses besouros têm papel ecológico muito importante, auxiliam na ciclagem de nutrientes, triturando frutos, flores e a toda a sua gama de alimentos antes de serem plenamente agregados ao solo. Além disso são bem bonitos e esse clique ai rendeu muita felicidade na minha formação!
0 2138 minutes ago
Found this guy hanging out in the field today! 📷: E. Lund
🌼Torradinhas, aqui está a primeira parte do meu resumo de Biologia, sobre tecidos.🌼
• O próximo sairá sexta e será sobre vírus.
•Quais os assuntos atuais de vcs?? ~Leleh🐻
Young warblers are coming through! A couple Hooded Warblers stopped by late in today's banding session. Hoping we get many more different warbler species. It would be nice to see the Cerulean again! @birdsoftoucanridge
18 8567 hours ago
Aircraft are forced to land so close to the beach so as to touch down near the start of the short Runway 10, which is 2300 metres in length.
Maho Beach in Saint Martin is known globally for its close encounters with planes.
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