{"id":6363,"date":"2018-04-24T11:53:46","date_gmt":"2018-04-24T14:53:46","guid":{"rendered":"https:\/\/www.infraestruturameioambiente.sp.gov.br\/pgibt\/?page_id=6363"},"modified":"2018-04-24T12:07:50","modified_gmt":"2018-04-24T15:07:50","slug":"debora-pinheiro-de-oliveira-ms","status":"publish","type":"page","link":"https:\/\/www.infraestruturameioambiente.sp.gov.br\/pgibt\/dissertacoesteses\/debora-pinheiro-de-oliveira-ms\/","title":{"rendered":"D\u00e9bora Pinheiro de Oliveira MS"},"content":{"rendered":"<h2 style=\"text-align: center\"><a href=\"arquivos.ambiente.sp.gov.br\/pgibt\/2015\/02\/faixapos6.jpg\"><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-3777 size-full\" style=\"border: 0px\" src=\"https:\/\/smastr16.blob.core.windows.net\/pgibt\/2015\/02\/faixapos6.jpg\" alt=\"faixapos6\" width=\"950\" height=\"163\" srcset=\"https:\/\/smastr16.blob.core.windows.net\/pgibt\/2015\/02\/faixapos6.jpg 950w, https:\/\/smastr16.blob.core.windows.net\/pgibt\/2015\/02\/faixapos6-768x131.jpg 768w\" sizes=\"(max-width: 950px) 100vw, 950px\" \/><\/a><\/h2>\n<hr align=\"center\" noshade=\"noshade\" size=\"1\" width=\"100%\" \/>\n<h2 style=\"text-align: center\">D\u00e9bora Pinheiro de Oliveira<\/h2>\n<hr align=\"center\" noshade=\"noshade\" size=\"1\" width=\"100%\" \/>\n<p style=\"text-align: center\">No dia 27 de abril de 2017, no Instituto de Bot\u00e2nica de S\u00e3o Paulo, foi realizada a defesa da disserta\u00e7\u00e3o de mestrado pela aluna D\u00e9bora Pinheiro de Oliveira, intitulada \u201cA a\u00e7\u00e3o dos vol\u00e1teis induzidos por herbivoria na comunica\u00e7\u00e3o entre plantas<em>: Croton floribundus<\/em> Spreng como planta modelo\u201d. O trabalho foi avaliado e aprovado pela banca examinadora composta pela presidente e orientadora Profa. Dra. Silvia Ribeiro de Souza (N\u00facleo de Pesquisa em Ecologia, Instituto de Bot\u00e2nica) e pelos pesquisadores Prof. Dr. Douglas Silva Domingues (Universidade Estadual Paulista de Rio Claro) e Profa. Dra. Maria Tereza Grombone Guaratini (N\u00facleo de Pesquisa em Ecologia, Instituto de Bot\u00e2nica).<\/p>\n<hr align=\"center\" noshade=\"noshade\" size=\"1\" width=\"100%\" \/>\n<h3 style=\"text-align: center\">A a\u00e7\u00e3o dos vol\u00e1teis induzidos por herbivoria na comunica\u00e7\u00e3o entre plantas<em>: Croton floribundus<\/em> Spreng como planta modelo<\/h3>\n<hr align=\"center\" noshade=\"noshade\" size=\"1\" width=\"100%\" \/>\n<h4 style=\"text-align: center\"><strong>ABSTRACT<\/strong><\/h4>\n<p>Plant-plant communication refers to the process where a healthy plant \u201crealizes\u201d that is necessary increase its defenses against to a biotic or abiotic stressed neighboring plant (intraspecific or interspecific). Volatile organic compounds (VOCSs) have a relevant role in this process, as signaling and mediators of this communication, in which a plant under an herbivory relation can \u201crecognizes\u201d VOCs and also induce their defenses, promoting plant-plant communication. Considering the hypothesis that volatiles of infested plants by herbivory are active the \u2018&#8217;communication between plants, promoting changes in the emission VOC in healthy plants, we tested if this mechanism is activated by VOCs of leaves of young <em>Croton floribundus<\/em> individuals infested with <em>Tetranychus urticae<\/em>. The experiments were out in Teflon chambers, with adequate conditions (with radiation of 422 \u03bcmol.cm\u00b2s\u02c9\u00b9, relative humidity of 67.3 \u00b1 5.2, and temperature 27 \u00b1 2 \u00b0 C). The treatments were of: 1) characterization of the volatiles emitted <em>C. floribundus<\/em> infected by <em>T. urticae<\/em>; 2) Chemical communication, which was divided into two stages: a) healthy plants in contact with synthetic volatiles (SV receptors) and b) healthy plants in contact with volatiles induced by <em>T. urticae<\/em> (IV receptors). Twenty-seven individuals were used, of which 18 were exposed to <em>T. urticae<\/em> and nine were kept in the filtered air without contact with herbivory. VOCs were collected over 27 days of exposure. For the chemical communication experiments, 24 individuals were used for each treatment and the volatiles were collected from the 4th-9th days exposed. The volatiles sampled were desorbed in nitrogen gas by thermal desorption system and analyzed by gas chromatography coupled to mass spectrometer (CG-MS). <em>Croton floribundus<\/em> responded to <em>T. urticae<\/em> injury by emitting high concentrations of 3-Carene (999 ng.g.MS<sup>-1<\/sup>h<sup>-1<\/sup>), \u03b1-Farnesene (229 ng.g.MS<sup>-1<\/sup>h<sup>-1<\/sup>) and Methyl Salicylate (649.04 ng.g.MS<sup>-1<\/sup>h<sup>-1<\/sup>). These results subsided the preparation of synthetic volatiles that were used in the evaluetion of chemical communication. Both synthetic and induced volatiles were able to promote responses in SV receptors and IV receptors, producing new volatiles as well as increasing the emission rate of constituent volatiles. SV receptor plants produced an increase of \u03b2 Farnesene, whereas the IV plats receptors the \u03b1-Farnesene was induced. Some compounds were inhibited by plants IV, such as 3-hexene- 1-ol, and induced by the SV receptors. Both recipients induced and delivered TMTT on the 5th day of exposure (p &lt;0.05). This compound is reported in the literature as a relevant mediator in the process of communication between plants. The present study indicate that healthy individuals of <em>C. floribundus<\/em> respond to volatiles synthetic and volatiles induced by<em> T urticae<\/em>, suggesting that healthy plants, when in contact with the bouquet of specific volatiles, activate the chemical signals of alertness against attack of possible predators and in this way, the process of communication between healthy and infested individuals is established.<br \/>\n<strong>Keywords<\/strong>:\u00a0induced volatiles, chemical communication, receptor plants, herbivory, defenses<\/p>\n<p>&nbsp;<\/p>\n<h4 style=\"text-align: center\"><strong>RESUMO<\/strong><\/h4>\n<p style=\"text-align: justify\">A comunica\u00e7\u00e3o planta-planta refere-se ao processo de uma planta sadia \u201cperceber\u201d e aumentar suas defesas quando uma planta vizinha (intraespec\u00edfica ou interespec\u00edfica) est\u00e1 sob estresse bi\u00f3tico ou abi\u00f3tico. Os compostos org\u00e2nicos vol\u00e1teis possuem fun\u00e7\u00e3o relevante nesse processo, como sinalizadores e mediadores da comunica\u00e7\u00e3o, em que uma planta que est\u00e1 sob herbivoria pode \u201creconhecer\u201d os COV e tamb\u00e9m induzir suas defesas, promovendo a comunica\u00e7\u00e3o planta-planta. Considerando a hip\u00f3tese de que os vol\u00e1teis de plantas infestadas por herbivoria s\u00e3o atuantes no mecanismo de comunica\u00e7\u00e3o entre plantas, promovendo mudan\u00e7as na emiss\u00e3o do buqu\u00ea de plantas sadias, temos como objetivo verificar se esse mecanismo \u00e9 ativado pelos COV de folhas de indiv\u00edduos jovens de <em>Croton floribundus <\/em>infestadas com <em>Tetranychus urticae<\/em>. Os experimentos foram realizados em c\u00e2maras de teflon, com condi\u00e7\u00f5es adequadas (com radia\u00e7\u00e3o de 422 \u00b5mol.cm\u00b2s\u02c9\u00b9, umidade relativa de 67,3\u00b1 5,2, e temperatura 27\u00b12 \u00b0C). Os tratamentos consistiram em: 1) caracteriza\u00e7\u00e3o dos vol\u00e1teis emitidos por <em>C. floribundus <\/em>insfestados por <em>T. urticae<\/em>; 2) Comunica\u00e7\u00e3o qu\u00edmica, que foi dividido em duas etapas: a) plantas saud\u00e1veis em contato com vol\u00e1teis sint\u00e9ticos (receptoras VS) e b) plantas saud\u00e1veis em contato com vol\u00e1teis induzidos por <em>T. urticae <\/em>(receptoras VI). Vinte e sete indiv\u00edduos foram utilizados, sendo 18 expostos ao <em>T. urticae<\/em> e nove foram mantidos sob ar filtrado sem contato com herbivoria. Os COV foram coletados ao longo de 27 dias de exposi\u00e7\u00e3o. Para os experimentos de comunica\u00e7\u00e3o qu\u00edmica, 24 ind\u00edviduos foram utilizados para cada tratamento e os vol\u00e1teis foram coletados a partir do 4\u00b0 dia at\u00e9 o 9\u00b0 de exposi\u00e7\u00e3o. Os vol\u00e1teis amostrados foram dessorvidos em nitrog\u00eanio gasoso por sistema de dessor\u00e7\u00e3o t\u00e9rmica e analisados em cromatografia gasosa acoplada a espectr\u00f4metro de massas (CG-MS). <em>Croton floribundus<\/em> respondeu a inj\u00faria causada por <em>T. urticae<\/em> emitindo altas concentra\u00e7\u00f5es de 3-Careno (999 ng.g.MS<sup>-1<\/sup>h<sup>-1<\/sup>), \u03b1-Farneseno (229 ng.g.MS<sup>-1<\/sup>h<sup>-1<\/sup>) e Metil salicilato (649,04 ng.g.MS<sup>-1<\/sup>h<sup>-1<\/sup>). Os resultados desse experimento subsidiaram o preparo dos vol\u00e1teis sint\u00e9ticos que foram utilizados no tratamento de comunica\u00e7\u00e3o qu\u00edmica. Tanto os vol\u00e1teis sint\u00e9ticos quanto os vol\u00e1teis induzidos foram capazes de promover respostas em plantas saud\u00e1veis, receptoras VS e VI, produzindo novos vol\u00e1teis bem como aumentando a taxa de emiss\u00e3o de vol\u00e1teis constitutivos. As plantas receptoras de VS produziram mais \u03b2 Farneseno; j\u00e1, as plantas receptoras de VI, o \u03b1 Farneseno foi induzido. Alguns compostos foram inibidos pelas plantas VI, como o 3 Hexen-1-ol, e induzido pelas receptoras de VS. Ambas as receptoras induziram e emitiram TMTT no 5\u00b0 dia de exposi\u00e7\u00e3o (<em>p <\/em>&lt; 0,05). Esse composto \u00e9 relatado na literatura como um mediador relevante no processo de comunica\u00e7\u00e3o entre plantas. Os resultados do presente trabalho indicam que indiv\u00edduos sadios de <em>C. floribundus<\/em> respondem a vol\u00e1teis sint\u00e9ticos e a vol\u00e1teis induzidos por <em>T. urticae<\/em>, sugerindo que as plantas sadias, quando em contato com o buqu\u00ea de vol\u00e1teis espec\u00edficos, ativam os sinais qu\u00edmicos de alerta contra ao ataque de poss\u00edveis predadores e dessa forma, \u00e9 estabelecido o processo de comunica\u00e7\u00e3o entre indiv\u00edduos sadios e infestados.<br \/>\n<strong>Palavras-chave<\/strong>:\u00a0vol\u00e1teis induzidos, comunica\u00e7\u00e3o qu\u00edmica, plantas receptoras, herbivoria, defesas<\/p>\n<hr align=\"center\" noshade=\"noshade\" size=\"1\" width=\"100%\" \/>\n<p style=\"text-align: center\"><a href=\"https:\/\/smastr16.blob.core.windows.net\/pgibt\/2018\/04\/dissertacao-.pdf\"><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter\" src=\"https:\/\/smastr16.blob.core.windows.net\/pgibt\/2013\/09\/pdf_grande.gif\" alt=\"pdf_grande\" width=\"60\" height=\"60\" \/><\/a><span style=\"color: #000000\"><a style=\"color: #000000\" href=\"https:\/\/smastr16.blob.core.windows.net\/pgibt\/2018\/04\/dissertacao-.pdf\">D\u00e9bora Pinheiro de Oliveira<br \/>\n<\/a><\/span><a href=\"https:\/\/smastr16.blob.core.windows.net\/pgibt\/2018\/04\/dissertacao-.pdf\">A a\u00e7\u00e3o dos vol\u00e1teis induzidos por herbivoria na comunica\u00e7\u00e3o entre plantas<em>: Croton floribundus<\/em> Spreng como planta modelo<\/a><\/p>\n<hr align=\"center\" noshade=\"noshade\" size=\"1\" width=\"100%\" \/>\n<p style=\"text-align: center\"><strong>\u00a0<a href=\"www.infraestruturameioambiente.sp.gov.br\/pgibt\/dissertacoesteses\/\">VOLTAR AS DISSERTA\u00c7\u00d5ES E TESES<\/a><\/strong><\/p>\n<hr align=\"center\" noshade=\"noshade\" size=\"1\" width=\"100%\" \/>\n","protected":false},"excerpt":{"rendered":"<p>D\u00e9bora Pinheiro de Oliveira No dia 27 de abril de 2017, no Instituto de Bot\u00e2nica de S\u00e3o Paulo, foi realizada a defesa da disserta\u00e7\u00e3o de mestrado pela aluna D\u00e9bora Pinheiro de Oliveira, intitulada \u201cA a\u00e7\u00e3o dos vol\u00e1teis induzidos por herbivoria na comunica\u00e7\u00e3o entre plantas: Croton floribundus Spreng como planta modelo\u201d. O trabalho foi avaliado e [&hellip;]<\/p>\n","protected":false},"author":63,"featured_media":0,"parent":249,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":[],"_links":{"self":[{"href":"https:\/\/www.infraestruturameioambiente.sp.gov.br\/pgibt\/wp-json\/wp\/v2\/pages\/6363"}],"collection":[{"href":"https:\/\/www.infraestruturameioambiente.sp.gov.br\/pgibt\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.infraestruturameioambiente.sp.gov.br\/pgibt\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.infraestruturameioambiente.sp.gov.br\/pgibt\/wp-json\/wp\/v2\/users\/63"}],"replies":[{"embeddable":true,"href":"https:\/\/www.infraestruturameioambiente.sp.gov.br\/pgibt\/wp-json\/wp\/v2\/comments?post=6363"}],"version-history":[{"count":2,"href":"https:\/\/www.infraestruturameioambiente.sp.gov.br\/pgibt\/wp-json\/wp\/v2\/pages\/6363\/revisions"}],"predecessor-version":[{"id":6375,"href":"https:\/\/www.infraestruturameioambiente.sp.gov.br\/pgibt\/wp-json\/wp\/v2\/pages\/6363\/revisions\/6375"}],"up":[{"embeddable":true,"href":"https:\/\/www.infraestruturameioambiente.sp.gov.br\/pgibt\/wp-json\/wp\/v2\/pages\/249"}],"wp:attachment":[{"href":"https:\/\/www.infraestruturameioambiente.sp.gov.br\/pgibt\/wp-json\/wp\/v2\/media?parent=6363"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}