Jatropha curcas is a common species in Brazil, potentially being an option to produce oil for bioenergetic purposes. Around the world, J. curcas has been cultivated in areas of low fertility, in the presence of salts, and with the use of brackish groundwater. Salt stress can hinder the absorption of nutrients and allow entry of ions in toxic concentrations, affecting the development and productivity of plants. This study aimed to evaluate the effect of salinity on the gaseous exchange and the dynamics of some mineral nutrients in the leaves, stems and roots of J. curcas, subjected to two levels of NaCl (0 and 150 mM) in four genotypes: CNPAE183 (tolerant-like), JCAL171 (sensitive-like) and CNPAE133 and CNPAE266 (confused responses to tolerance). Salt treatment promotes a strong reduction in photosynthesis and plant height in all genotypes, although more drastic in CNPAE266 (77.5% and 70% respectively). Additionally, NaCl reduced the content of manganese, calcium, potassium and phosphorus in the leaves, elements linked to gas exchange. The salt-tolerant-like (CNPAE183) and salt-sensitive-like (JCAL171) transcriptome matched the applied sequences, with few chimeric sequences and novel transcripts with no similarities.

中文翻译：

---

盐度下光合作用的调节及矿质养分对麻疯树的作用。

麻疯树是巴西的一种常见物种，可能是为生物能源目的生产石油的一种选择。在世界各地，J . 麻疯树在肥力低的地区种植，存在盐分，并使用微咸的地下水。盐胁迫会阻碍营养物质的吸收，并允许有毒浓度的离子进入，影响植物的发育和生产力。本研究旨在评估盐度对植物叶片、茎和根中某些矿质营养物质的气体交换和动态的影响。 野马，在四种基因型中受到两种水平的 NaCl（0 和 150 mM）：CNPAE183（耐受样）、JCAL171（敏感样）和 CNPAE133 和 CNPAE266（对耐受的混淆反应）。盐处理促进了所有基因型的光合作用和株高的强烈降低，尽管在 CNPAE266 中更为剧烈（分别为 77.5% 和 70%）。此外，NaCl 降低了叶子中锰、钙、钾和磷的含量，这些元素与气体交换有关。耐盐样 (CNPAE183) 和盐敏感样 (JCAL171) 转录组与应用的序列相匹配，几乎没有嵌合序列和没有相似性的新转录本。