FOTOFOSFORILACIN CICLICA PDF

2hv 2hv ADP + Pi ATP Cit b – f PC FOTOFOSFORILACION NO CICLICA FOTOFOSRORILACION CICLICA FASE LUMINOSA- ESQUEMA Z 8. Check out my latest presentation built on , where anyone can create & share professional presentations, websites and photo albums in minutes. Photophosphorylation during chloroplast development in Red Kidney bean. II. Photophosphorylation and photoreduction appear concomitantly but initially are.

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Fisiologia y Nutricion Vegetal

Oxgeno activado y agentes que generan radicales libres de oxgeno, tales como las radiaciones ionizantes, inducir lesiones en el ADN que numerosas deleciones, mutaciones causan y otros efectos genticos letales.

Las tasas de reduccion en la oscuridad disminuyeron rapidamente a niveles bajos hacia las 15 horas de iluminacion, cuando se observaron tasas normales de actividad fotoquimica. The most visible zinc deficiency symptoms are short internodes and a decrease in leaf size. The rates of dark reduction rapidly diminished to low levels by 15 h of illumination when normal rates of photochemical activity were observed.

La fase luminosa que se lleva a cabo a nivel de las membranas de los tilacoides y La fase oscura que se lleva a cabo a nivel del estroma. Seed and grain production are reduced with low boron supply.

Basndose en los datos obtenidos en el estudio de absorcin de nutrientes a travs del tiempo se determin que, en trminos prcticos, la fertilizacin de la fresa puede distribuirse en 3 etapas importantes del cultivo. Igualdad Tipo de planta C3 o C4? Molybdenum uptake by plants increases with increased soil pH, which is opposite fotofoosforilacin of the other micronutrients.

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RA-CIAT spa Cyclic phosphorylation with phenazine methosulfate and noncyclic phosphorylation and reduction with ferricyanide were detected in isolated chloroplasts from greening bean leaves after 3- 4 h of illumination.

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Manganese deficiencies mainly occur on organic soils, high-pH soils, sandy soils low in organic matter, and on over-limed soils. Por eso se hace referencia a ellos como qP y DNF de la fluorescencia de la clorofila.

El ms abundante es el -caroteno Funcin: Copper also is required for lignin synthesis which is needed for cell wall strength and prevention of wilting. Protection against photodamage is a multilevel process. The first fotofosforilaicn of defense is suppression of damage by quenching of excess excitation as heat.

Fotofosforilación – Wikipedia, a enciclopedia libre

Because molybdenum requirements are so low, most plant species do not exhibit molybdenum-deficiency symptoms. Uptake of manganese decreases with increased soil pH and is adversely affected by high levels of available iron in soils.

Las tasas de fotofosforilacion fueron comparables a niveles maduros equivalentes de 15 a 18 horas de desarrollo. Despues de un periodo de inactividad de 2 a 3 dias, se noto un rapido incremento en el peso fresco de la hoja, en el momento en que el contenido total de clorofila alcanzo valores estables basados en peso fresco.

If this defense is not sufficient and toxic photoproducts form, a variety of scavenging systems eliminate the reactive photoproducts. Poorly aerated or compacted soils also reduce iron uptake by plants.

In addition, chloride is applied to soils with KCl, the dominant potassium fertilizer. Iron is associated with sulfur in plants to form compounds that catalyze other reactions. Estos dos ltimos mecanismos reducen la cantidad de fluorescencia de la clorofila. Conversely, manganese toxicity can result in some acidic, high-manganese soils.

Photoreduction of ferricyanide attained apeak value by 12 h of illumination and subsequently fell to normal levels by h. Activacin del oxgeno Puede ocurrir por dos mecanismos diferentes La absorcin de energa suficiente para invertir el giro de uno de los electrones desapareados La forma birradical de oxgeno est en un estado fundamental triplete debido a que los electrones tienen espines paralelos Si el oxgeno triplete absorbe la energa suficiente para invertir el giro de uno de sus electrones desapareados, se forma el estado de singlete, tienen espines opuestos Crop species, and even some cultivars of the same species, differ in their ability to adapt to nutrient deficiencies and toxicities.

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Zinc deficient plants also exhibit delayed maturity. Copper uptake decreases as soil pH increases. Delayed maturity is another deficiency symptom in some species. Se detecto fosforilacion ciclica con metosulfato de fanazina y fosforilacion no ciclica y reduccion con ferrocianuro en cloroplastos aislados provenientes de hojas de frijol enverdecientes, despues de 3 a 4 horas de iluminacion.

Many symptoms appear similar. Iron Iron is involved in the production of chlorophyll, and iron chlorosis is easily recognized on iron-sensitive crops growing on calcareous soils.

Iron deficiencies are found mainly on high pH soils, although some acid, sandy soils low in organic matter also may be iron-deficient. Zinc Zinc is an essential component of various enzyme systems for energy production, protein ftofosforilacin, and growth regulation.

El dao oxidativo al ADN Increased phosphorus and iron availability in soils decreases copper uptake by plants.

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