Tolerância de trigo, triticale e centeio a diferentes níveis de ferro em solução nutritiva

Camargo, Carlos Eduardo de Oliveira; Felício, João Carlos; Freitas, José Guilherme de; Filho, Antônio Wilson Penteado Ferreira

doi:10.1590/s0006-87051988000200013

Cited by 10 publications

(3 citation statements)

References 7 publications

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“…Different triticale varieties were more tolerant to high concentrations of zinc (Zn) and/or iron (Fe 3+ ) under hydroponics than wheat and rye [15,16]. Camargo et al [15] studied the root growth of triticale, wheat and rye exposed to high Fe and/or Zn concentrations but did not analyse cytogenetic effects.…”

Section: Introductionmentioning

confidence: 99%

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Combination of Iron and Zinc Enhanced the Root Cell Division, Mitotic Regularity and Nucleolar Activity of Hexaploid Triticale

Carvalho,

Lino,

Alves

et al. 2023

Plants

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Hexaploid triticale results from crosses between durum wheat and rye. Despite its high agronomic potential, triticale is mainly used for livestock feed. Triticale surpasses their parental species in adaptability and tolerance to abiotic and biotic stresses, being able to grow in acidic soils where a high amount of iron (Fe) and zinc (Zn) is typical. On the other hand, high amounts of these essential trace elements can be cytotoxic to bread wheat. The cytotoxicity induced by seed priming with a high concentration of Fe and Zn impaired root cell division and induced nucleolar changes in bread wheat. Such cytogenetic approaches were expedited and successfully determined cytotoxic and suited micronutrient dosages for wheat nutripriming. With this study, we intended to analyse the hexaploid triticale cv ‘Douro’ root mitotic cell cycle and nucleolar activity after seed priming performed with aqueous solutions of iron (Fe) and/or zinc (Zn), containing a concentration that was previously considered cytotoxic, to bread wheat and to infer the higher tolerance of triticale to these treatments. The overall cytogenetic data allowed us to conclude that the Fe + Zn treatment enhanced the root mitotic index (MI), mitosis regularity and nucleolar activity of ‘Douro’ relative to the control and the individual treatments performed with Fe or Zn alone. The Fe + Zn treatment might suit triticale biofortification through seed priming.

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Section: Introductionmentioning

confidence: 99%

“…Triticale can tolerate higher Fe and/or Zn concentrations than wheat and rye [15]. Hence, for this work, we hypothesised that using a dosage of Fe and/or Zn that was somewhat cytotoxic to bread wheat when used previously in seed priming [17] would not be cytotoxic to hexaploid triticale.…”

Section: Introductionmentioning

confidence: 99%

Combination of Iron and Zinc Enhanced the Root Cell Division, Mitotic Regularity and Nucleolar Activity of Hexaploid Triticale

Carvalho,

Lino,

Alves

et al. 2023

Plants

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“…In wheat, Fe toxicity is not extensively reported, and is mainly described for flooded soils, where it can co-occur with Mn toxicity, in years of heavy rainfall. The impairment of wheat growth and a yellowing of older leaves are the most commonly reported symptoms [16,17].…”

Section: Introductionmentioning

confidence: 99%

Aluminium, Iron and Silicon Subcellular Redistribution in Wheat Induced by Manganese Toxicity

et al. 2021

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Acidic soils can promote the bioavailability of Al, Mn, and Fe to toxic levels, reducing crop growth and productivity. Symptoms of metal excess/deficit are dependent on the chemical composition of the soil solution and of plant tissues. In the present study, the concentration and subcellular distribution of Al, Mn, Fe, and Si (known to alleviate metal stress) were quantified through inductively coupled plasma mass spectrometry (ICP-MS) in roots and shoots of wheat grown in acidic soils with rising levels of Mn. In control acidic soil, wheat showed high concentrations of Al, Mn, and Fe. After Mn supplementation, bioavailable Al, Fe, and Si levels increased in the soil solution, but plant uptake ratio decreased. Root Mn levels increased, while those of Al, Fe, and Si decreased. Although elements were increasingly translocated to the shoot, root Al and Fe concentrations were 10-fold higher than those in the shoot. At the highest Mn concentration supplied, Al, Fe, and Si proportions increased in the organelles, while Mn proportion increased in the vacuole. High bioavailable Mn levels disrupt metal homeostasis in wheat grown in acidic soils, influencing element subcellular distribution. Symptoms of metal toxicity result from interactions between several elements, and therefore a comprehensive chemical analysis of soil solution and plant tissues contributes to a more accurate understanding of their uptake dynamics and their agronomic implications.

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Variation for tolerance to high concentration of ferrous iron (Fe2+) in Australian hexaploid wheat

et al. 2009

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Tolerância de trigo, triticale e centeio a diferentes níveis de ferro em solução nutritiva

Cited by 10 publications

References 7 publications

Combination of Iron and Zinc Enhanced the Root Cell Division, Mitotic Regularity and Nucleolar Activity of Hexaploid Triticale

Combination of Iron and Zinc Enhanced the Root Cell Division, Mitotic Regularity and Nucleolar Activity of Hexaploid Triticale

Aluminium, Iron and Silicon Subcellular Redistribution in Wheat Induced by Manganese Toxicity

Variation for tolerance to high concentration of ferrous iron (Fe2+) in Australian hexaploid wheat

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