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Shortage absorbed by plants inorganic phosphate (Pi) in the environment is a phenomenon often encountered . Plants adapt to the conditions of such stress by running a series of mechanisms that increase the download Pi Pi substrate and the mobilization of internal resources. The roots can secrete organic acids to the substrate , acid phosphatase , as well as , if necessary , ribonuclease . Followed by the induction of membrane conveyors Pi and intracellular phosphatases . Many plant adaptations to phosphorus deficiency is preceded by the activation (or repression ) of specific genes . Pi deficient conditions observed induction of Pi transporter genes in the roots , the genes encoding the acid phosphatases , nucleases , b- glucosidase and other proteins . Plant to respond quickly and appropriately to environmental change , it must have an efficient system of perception and the transmission of signals to all cells . Little is known so far about the mechanisms of reception and signal transduction of Pi deficiency in the soil and / or plant tissues , but studies of this issue began to develop intensively in recent years. This paper discussed the nature and origin of a shortage signal Pi and the role of hormones and other compounds involved in the perception and transduction in plant cells. Identified a number of mutants having decreased or increased levels of Pi, diverse acidic phosphatase activity and protein content and their different responses to Pi deficit in comparison with the control plants . Application and analysis of these mutants proved to be helpful in research methods for transferring information deficit Pi and mechanisms of plant response to phosphorus deficiency .
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The Editorial Board
Andrzej Łukaszyk - przewodniczący, Zofia Bielańska-Osuchowska, Szczepan Biliński, Mieczysław Chorąży, Aleksander Koj, Włodzimierz Korochoda, Leszek Kuźnicki, Aleksandra Stojałowska, Lech Wojtczak

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