Abstract
The rare phenomenon of plant manganese (Mn) hyperaccumulation within the Australian flora has previously been detected in the field, which suggested that the tree genus Gossia (Myrtaceae) might contain new Mn hyperaccumulators. We conducted the first growth experiment on Gossia using a multi-factorial dosing trial to assess Mn, cobalt (Co), and zinc (Zn) (hyper)accumulation patterns in selected Gossia species (G. fragrantissima and G. punctata) after a systematic assessment of elemental profiles on all holdings of the genus Gossia at the Queensland Herbarium using handheld X-ray fluorescence spectroscopy. We then conducted detailed in situ analyses of the elemental distribution of Mn, Co, Zn and other elements at the macro (organ) and micro (cellular) levels with laboratory- and synchrotron-based X-ray fluorescence microscopy (XFM). Gossia pubiflora and Gossia hillii were newly discovered to be Mn hyperaccumulator plants. In the dosing trial, G. fragrantissima accumulated 17 400 µg g-1 Mn, 545 µg g-1 Co, and 13 000 µg g-1 Zn, without signs of toxicity. The laboratory-based XFM revealed distinct patterns of accumulation of Co, Mn, and Zn in G. fragrantissima, while the synchrotron XFM showed their localization in foliar epidermal cells, and in the cortex and phloem cells of roots. This study combined novel analytical approaches with controlled experimentation to examine metal hyperaccumulation in slow-growing tropical woody species, thereby enabling insight into the phenomenon not possible through field studies.
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Claims 7
Claim · model-written summary
Gossia pubiflora was newly identified as a manganese hyperaccumulator.
- Taxon
- Gossia pubifloraGossia pubiflorae0
- Outcome
- Mn hyperaccumulator plantse0
Verbatim
e0“Gossia pubiflora and Gossia hillii were newly discovered to be Mn hyperaccumulator plants.”
Claim · model-written summary
Gossia hillii was newly identified as a manganese hyperaccumulator.
- Taxon
- Gossia hillii
Gossia hilliie0 - Outcome
- Mn hyperaccumulator plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Gossia pubiflora and Gossia hillii were newly discovered to be Mn hyperaccumulator plants.”
Claim · model-written summary
In the dosing trial, G. fragrantissima accumulated 17 400 µg g-1 manganese without toxicity signs.
- Taxon
- G. fragrantissima
Gossia fragrantissimae0 - Outcome
- accumulated 17 400 µg g-1 Mne0
- Value
- 17 400 µg g-1 Mne0
- Qualifier
- without signs of toxicitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the dosing trial, G. fragrantissima accumulated 17 400 µg g-1 Mn, 545 µg g-1 Co, and 13 000 µg g-1 Zn, without signs of toxicity.”
Claim · model-written summary
In the dosing trial, G. fragrantissima accumulated 545 µg g-1 cobalt without toxicity signs.
- Taxon
- G. fragrantissimaGossia fragrantissimae0
- Outcome
- 545 µg g-1 Coe0
- Value
- 545 µg g-1 Coe0
- Qualifier
- without signs of toxicitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the dosing trial, G. fragrantissima accumulated 17 400 µg g-1 Mn, 545 µg g-1 Co, and 13 000 µg g-1 Zn, without signs of toxicity.”
Claim · model-written summary
In the dosing trial, G. fragrantissima accumulated 13 000 µg g-1 zinc without toxicity signs.
- Taxon
- G. fragrantissimaGossia fragrantissimae0
- Outcome
- 13 000 µg g-1 Zne0
- Value
- 13 000 µg g-1 Zne0
- Qualifier
- without signs of toxicitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the dosing trial, G. fragrantissima accumulated 17 400 µg g-1 Mn, 545 µg g-1 Co, and 13 000 µg g-1 Zn, without signs of toxicity.”
Claim · model-written summary
Laboratory XFM revealed distinct cobalt, manganese and zinc accumulation patterns in G. fragrantissima.
- Taxon
- G. fragrantissimaGossia fragrantissimae0
- Outcome
- distinct patterns of accumulation of Co, Mn, and Zne0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The laboratory-based XFM revealed distinct patterns of accumulation of Co, Mn, and Zn in G. fragrantissima”
Claim · model-written summary
Synchrotron XFM localized the metals to foliar epidermal cells and root cortex and phloem cells.
- Taxon
- G. fragrantissimaGossia fragrantissimae1
- Organ / stage
- foliar epidermal cellse0
- Outcome
- localization in foliar epidermal cells, and in the cortex and phloem cells of rootse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the synchrotron XFM showed their localization in foliar epidermal cells, and in the cortex and phloem cells of roots.”
e1“Co, Mn, and Zn in G. fragrantissima”