Auxin production by the plant trypanosomatid<i>Phytomonas serpens</i>and auxin homoeostasis in infected tomato fruits

Ienne, Susan; Freschi, Luciano; Vidotto, Vanessa F.; Souza, Tiago Antônio de; Purgatto, Eduardo; Zingales, Bianca

doi:10.1017/s0031182014000547

Cited by 5 publications

(2 citation statements)

References 55 publications

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“…It has yet to be shown whether Phytomonas infection leads to alteration of plant or insect host for enhanced transmission. However, emerging data suggests that Phytomonas serpens is able to produce auxin and thus may interfere with plant hormone signalling [ 66 ].…”

Section: Transmission and Life Cyclementioning

confidence: 99%

Phytomonas: Trypanosomatids Adapted to Plant Environments

et al. 2015

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Over 100 years after trypanosomatids were first discovered in plant tissues, Phytomonas parasites have now been isolated across the globe from members of 24 different plant families. Most identified species have not been associated with any plant pathology and to date only two species are definitively known to cause plant disease. These diseases (wilt of palm and coffee phloem necrosis) are problematic in areas of South America where they threaten the economies of developing countries. In contrast to their mammalian infective relatives, our knowledge of the biology of Phytomonas parasites and how they interact with their plant hosts is limited. This review draws together a century of research into plant trypanosomatids, from the first isolations and experimental infections to the recent publication of the first Phytomonas genomes. The availability of genomic data for these plant parasites opens a new avenue for comparative investigations into trypanosomatid biology and provides fresh insight into how this important group of parasites have adapted to survive in a spectrum of hosts from crocodiles to coconuts.

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Section: Transmission and Life Cyclementioning

confidence: 99%

Phytomonas: Trypanosomatids Adapted to Plant Environments

et al. 2015

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“…The fruit infected by the insects Phthia picta and Nezara viridula present yellowish spots that result in nutritional loss and; consequently, lead to commercial impracticability of the product (JANKEVICIUS et al, 1989). Phytomonas serpens is also attributed to the production of auxin, a class of phytohormones that ends up causing interference with the plant metabolism, thus affecting plant development (IENNE et al, 2014). Despite the damage caused to crops, P. serpens is not considered a phytopathogen parasite, since the promastigote form of the parasite remains restricted to the place of infection (oLIVEIRA et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Activity of Piperaceae extracts and fractions in the control of Phytomonas serpens

et al. 2020

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Protozoa of the genus Phytomonas are harmful parasites to several agricultural crops of economic importance. Due to their recognized biological activity, crude extracts of Piper aduncum, P. crassinervium, P. hispidum, and P. amalago leaves, were tested using the microdilution plate technique to assess the antiparasitic potential against Phytomonas serpens. Results showed that the ethanolic crude extract of P. crassinervium and P. amalago presented the best inhibitory concentration for 50% of the cells (IC50), 16.5 µg mL-1 in chloroform phase, and 18 µg mL-1 in aqueous phase, respectively, after 48 h treatment. Cytotoxicity analyses were performed using the colorimetric method of sulforhodamine-B in LLCMK2 mammalian cells. The chloroform phase of P. crassinervium was subjected to the fractionation process, in which the ethyl acetate and dichloromethane fractions obtained better IC50 values. Scanning electron microscopy (SEM) images showed alterations in the cell membrane of the treated parasites. The data obtained indicate a potential antiparasitic effect of the Piper species analyzed against P. serpens, being considered promising candidates for formulations of bioproducts to control the parasite.

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