Arbuscular mycorrhizal fungi inoculation as strategy to mitigate copper toxicity in young field-grown vines

IF 1.1 4区 农林科学 Q4 FOOD SCIENCE & TECHNOLOGY Ciencia E Tecnica Vitivinicola Pub Date : 2023-01-01 DOI:10.1051/ctv/ctv20233801060
G. Brunetto, A. R. Marques, Edicarla Trentin, P. B. Sete, C. R. Soares, P. Ferreira, G. W. D. de Melo, J. Zalamena, L. O. D. da Silva, Carina Marchezan, I. B. D. da Silva, João P. J. dos Santos, Letícia Morsch
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Abstract

Frequent applications of foliar fungicides on grapevines increase copper (Cu) levels in soils, which may cause toxicity to young grapevines transplanted to eradicated old vineyards, especially because they are more sensitive. Therefore, it is necessary to adopt strategies to mitigate Cu toxic effects, such as grapevine seedlings inoculation with arbuscular mycorrhizal fungi (AMF), which establish symbiosis association with plants roots, preferably in field experiments. The present study we objective to evaluate AMF pre-inoculation effects on growth and mineral absorption of grapevine seedlings in a field experiment using sandy soil contaminated with Cu. The experiment was conducted in Santana do Livramento (RS), in a Typical Hapludalf soil. Initially, grapevine seedlings from ‘Paulsen 1103’ (Vitis berlandieri × Vitis rupestris) rootstock were AMP pre-inoculated and then transplanted into the field in area containing high Cu levels. Experimental design was a randomized complete block design, with a 4 × 2 factorial scheme: four seedlings pre-inoculation treatments (control = uninoculated seedlings; Rhizophagus clarus UFSC-14; Rhizophagus intraradices UFSC-32; Dentisculata heterogama UFSC-08); two soil Cu concentrations (62 mg/kg and 118 mg/kg (Mehlich-I), with five replications. Pre-inoculation did not favor growth of young vines in field after 316 and 500 days of transplantation (DAT). However, seedlings from pre-inoculated vines with R. intraradices UFSC-32 and R. clarus UFSC-14 presented lower Cu levels in leaves in the soils with high Cu levels. Thus, pre-inoculation of young vines seedling with selected AMF may represent a strategy to reduce Cu toxicity, contributing to plants establishment in contaminated soils.
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丛枝菌根真菌接种减轻田间幼藤铜毒性的策略
经常在葡萄藤上施用叶面杀菌剂会增加土壤中的铜(Cu)含量,这可能会对移植到被根治的老葡萄园的年轻葡萄藤产生毒性,特别是因为它们更敏感。因此,有必要采取缓解铜毒性效应的策略,如在葡萄幼苗接种丛枝菌根真菌(AMF),这些真菌与植物根系建立了共生关系,最好在田间试验中进行。在铜污染的沙质土壤上,研究AMF预接种对葡萄幼苗生长和矿质吸收的影响。试验在桑塔纳做利夫拉曼托(RS),在典型的Hapludalf土壤。以‘Paulsen 1103’(Vitis berlandieri × Vitis rupestris)砧木为材料,先进行AMP预接种,然后移栽到高铜含量地区的田间。试验设计采用随机完全区组设计,采用4 × 2因子方案:4株苗接种前处理(对照=未接种苗;克拉根噬菌UFSC-14;根噬菌;齿科异种生殖(Dentisculata heterogama);2个土壤Cu浓度(62 mg/kg和118 mg/kg) (Mehlich-I), 5个重复。预接种对移栽后316天和500天幼藤田间生长均无促进作用。而在高铜含量土壤中,预接种白藜芦花UFSC-32和白藜芦花UFSC-14的葡萄幼苗叶片铜含量较低。因此,用选定的AMF预接种幼藤幼苗可能是一种降低Cu毒性的策略,有助于植物在污染土壤中生长。
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来源期刊
Ciencia E Tecnica Vitivinicola
Ciencia E Tecnica Vitivinicola Agricultural and Biological Sciences-Food Science
自引率
12.50%
发文量
5
期刊介绍: Ciência e Técnica Vitivinícola (Journal of Viticulture and Enology) is an international journal that publishes original articles, research notes and review articles, written in Portuguese or in English, on the various fields of the science and technology of vine and wine: Viticulture, Enology and Vitivinicultural economy.
期刊最新文献
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