Prehistoric plants made dramatic changes that have allowed the modern green world to develop and could provide help in tackling climate change.
Research published on Thursday reveals a key adaptation that allowed plants to colonise on dry land and explains how vascular plants avoid having blocked stem tissue as they grow bigger.
It also helps settle a question raised 100 years ago when scientists first identified “elongated, narrow, and increasingly complex shapes” in vascular plants, but did not know why.
The finding, published in the journal Science, offers hope for advances in environmental work such as trying to ensure drought-resistance in crop breeding programmes as the climate changes.
The first vascular plants were just centimetres tall and constrained to live near water because of the blocked tissues problem. Stem tissue became blocked if they grew too tall.
To grow taller, they had to evolve alternatives. Plant lineages that succeeded on land found their own solution to the problem.
The new study shows that plants maintain drought-resistant vascular arrangements by restricting the tissue’s width.
With increased size, tissue assumed the elongated, narrow and increasingly complex shapes that were first identified — but not explained — in 1920.
“If they are strung out in a long narrow shape, embolism [blockage] has to overcome many successive cell walls to go very far, which can save the plant’s life in a drought,” said study co-author Dr Martin Bouda.
Co-author Professor Craig Brodersen said: “Now that we have a better understanding of how the vascular systems are put together and how that influences a plant's ability to tolerate drought, that's the kind of thing that could be used as a target for breeding programmes.”
The fossil record shows increasing diversity in how the plant stem is assembled as plants radiate out from water sources.
Vascular tissue arrangements diversify to take on a vast array of shapes in the stem.
The team of scientists sampled the xylem strands of living and extinct seedless vascular plants spanning over 400 million years of evolution.
Benefits of first-time home buyers' scheme
- Priority access to new homes from participating developers
- Discounts on sales price of off-plan units
- Flexible payment plans from developers
- Mortgages with better interest rates, faster approval times and reduced fees
- DLD registration fee can be paid through banks or credit cards at zero interest rates
EPL's youngest
- Ethan Nwaneri (Arsenal)
15 years, 181 days old - Max Dowman (Arsenal)
15 years, 235 days old - Jeremy Monga (Leicester)
15 years, 271 days old - Harvey Elliott (Fulham)
16 years, 30 days old - Matthew Briggs (Fulham)
16 years, 68 days old
Jetour T1 specs
Engine: 2-litre turbocharged
Power: 254hp
Torque: 390Nm
Price: From Dh126,000
Available: Now
HIJRA
Starring: Lamar Faden, Khairiah Nathmy, Nawaf Al-Dhufairy
Director: Shahad Ameen
Rating: 3/5
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The smuggler
Eldarir had arrived at JFK in January 2020 with three suitcases, containing goods he valued at $300, when he was directed to a search area.
Officers found 41 gold artefacts among the bags, including amulets from a funerary set which prepared the deceased for the afterlife.
Also found was a cartouche of a Ptolemaic king on a relief that was originally part of a royal building or temple.
The largest single group of items found in Eldarir’s cases were 400 shabtis, or figurines.
Khouli conviction
Khouli smuggled items into the US by making false declarations to customs about the country of origin and value of the items.
According to Immigration and Customs Enforcement, he provided “false provenances which stated that [two] Egyptian antiquities were part of a collection assembled by Khouli's father in Israel in the 1960s” when in fact “Khouli acquired the Egyptian antiquities from other dealers”.
He was sentenced to one year of probation, six months of home confinement and 200 hours of community service in 2012 after admitting buying and smuggling Egyptian antiquities, including coffins, funerary boats and limestone figures.
For sale
A number of other items said to come from the collection of Ezeldeen Taha Eldarir are currently or recently for sale.
Their provenance is described in near identical terms as the British Museum shabti: bought from Salahaddin Sirmali, "authenticated and appraised" by Hossen Rashed, then imported to the US in 1948.
- An Egyptian Mummy mask dating from 700BC-30BC, is on offer for £11,807 ($15,275) online by a seller in Mexico
- A coffin lid dating back to 664BC-332BC was offered for sale by a Colorado-based art dealer, with a starting price of $65,000
- A shabti that was on sale through a Chicago-based coin dealer, dating from 1567BC-1085BC, is up for $1,950
What can victims do?
Always use only regulated platforms
Stop all transactions and communication on suspicion
Save all evidence (screenshots, chat logs, transaction IDs)
Report to local authorities
Warn others to prevent further harm
Courtesy: Crystal Intelligence
Emiratisation at work
Emiratisation was introduced in the UAE more than 10 years ago
It aims to boost the number of citizens in the workforce particularly in the private sector.
Growing the number of Emiratis in the workplace will help the UAE reduce dependence on overseas workers
The Cabinet in December last year, approved a national fund for Emirati jobseekers and guaranteed citizens working in the private sector a comparable pension
President Sheikh Khalifa has described Emiratisation as “a true measure for success”.
During the UAE’s 48th National Day, Sheikh Khalifa named education, entrepreneurship, Emiratisation and space travel among cornerstones of national development
More than 80 per cent of Emiratis work in the federal or local government as per 2017 statistics
The Emiratisation programme includes the creation of 20,000 new jobs for UAE citizens
UAE citizens will be given priority in managerial positions in the government sphere
The purpose is to raise the contribution of UAE nationals in the job market and create a diverse workforce of citizens
Tearful appearance
Chancellor Rachel Reeves set markets on edge as she appeared visibly distraught in parliament on Wednesday.
Legislative setbacks for the government have blown a new hole in the budgetary calculations at a time when the deficit is stubbornly large and the economy is struggling to grow.
She appeared with Keir Starmer on Thursday and the pair embraced, but he had failed to give her his backing as she cried a day earlier.
A spokesman said her upset demeanour was due to a personal matter.
Low turnout
AI traffic lights to ease congestion at seven points to Sheikh Zayed bin Sultan Street
The seven points are:
Shakhbout bin Sultan Street
Dhafeer Street
Hadbat Al Ghubainah Street (outbound)
Salama bint Butti Street
Al Dhafra Street
Rabdan Street
Umm Yifina Street exit (inbound)
Key facilities
- Olympic-size swimming pool with a split bulkhead for multi-use configurations, including water polo and 50m/25m training lanes
- Premier League-standard football pitch
- 400m Olympic running track
- NBA-spec basketball court with auditorium
- 600-seat auditorium
- Spaces for historical and cultural exploration
- An elevated football field that doubles as a helipad
- Specialist robotics and science laboratories
- AR and VR-enabled learning centres
- Disruption Lab and Research Centre for developing entrepreneurial skills
COMPANY%20PROFILE
Living in...
This article is part of a guide on where to live in the UAE. Our reporters will profile some of the country’s most desirable districts, provide an estimate of rental prices and introduce you to some of the residents who call each area home.
The specs
Spare
Profile
Company name: Spare
Started: March 2018
Co-founders: Dalal Alrayes and Saurabh Shah
Based: UAE
Sector: FinTech
Investment: Own savings. Going for first round of fund-raising in March 2019
FIXTURES (all times UAE)
Sunday
Brescia v Lazio (3.30pm)
SPAL v Verona (6pm)
Genoa v Sassuolo (9pm)
AS Roma v Torino (11.45pm)
Monday
Bologna v Fiorentina (3.30pm)
AC Milan v Sampdoria (6pm)
Juventus v Cagliari (6pm)
Atalanta v Parma (6pm)
Lecce v Udinese (9pm)
Napoli v Inter Milan (11.45pm)
The specs: 2017 Porsche 718 Cayman
Price, base / as tested Dh222,500 / Dh296,870
Engine 2.0L, flat four-cylinder
Transmission Seven-speed PDK
Power 300hp @ 6,500rpm
Torque 380hp @ 1,950rpm
Fuel economy, combined 6.9L / 100km
The specs: 2019 Audi A8
Price From Dh390,000
Engine 3.0L V6 turbo
Gearbox Eight-speed automatic
Power 345hp @ 5,000rpm
Torque 500Nm @ 1,370rpm
Fuel economy, combined 7.5L / 100km
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The specs
Engine: 4.0-litre V8 twin-turbocharged and three electric motors
Power: Combined output 920hp
Torque: 730Nm at 4,000-7,000rpm
Transmission: 8-speed dual-clutch automatic
Fuel consumption: 11.2L/100km
On sale: Now, deliveries expected later in 2025
Price: expected to start at Dh1,432,000
Specs
Engine: Dual-motor all-wheel-drive electric
Range: Up to 610km
Power: 905hp
Torque: 985Nm
Price: From Dh439,000
Available: Now
The specs
MATCH INFO
England 2
Cahill (3'), Kane (39')
Nigeria 1
Iwobi (47')
The Old Slave and the Mastiff
Patrick Chamoiseau
Translated from the French and Creole by Linda Coverdale
The%20Afghan%20connection
if you go
The flights
Etihad, Emirates and Singapore Airlines fly direct from the UAE to Singapore from Dh2,265 return including taxes. The flight takes about 7 hours.
The hotel
Rooms at the M Social Singapore cost from SG $179 (Dh488) per night including taxes.
The tour
Makan Makan Walking group tours costs from SG $90 (Dh245) per person for about three hours. Tailor-made tours can be arranged. For details go to www.woknstroll.com.sg
SHAITTAN
Tomorrow 2021
Tomorrow 2021
AUSTRALIA SQUAD
Steve Smith (capt), David Warner, Cameron Bancroft, Jackson Bird, Pat Cummins, Peter Handscomb, Josh Hazlewood, Usman Khawaja, Nathan Lyon, Shaun Marsh, Tim Paine, Chadd Sayers, Mitchell Starc.
How to wear a kandura
Dos
- Wear the right fabric for the right season and occasion
- Always ask for the dress code if you don’t know
- Wear a white kandura, white ghutra / shemagh (headwear) and black shoes for work
- Wear 100 per cent cotton under the kandura as most fabrics are polyester
Don’ts
- Wear hamdania for work, always wear a ghutra and agal
- Buy a kandura only based on how it feels; ask questions about the fabric and understand what you are buying
Pharaoh's curse
British aristocrat Lord Carnarvon, who funded the expedition to find the Tutankhamun tomb, died in a Cairo hotel four months after the crypt was opened.
He had been in poor health for many years after a car crash, and a mosquito bite made worse by a shaving cut led to blood poisoning and pneumonia.
Reports at the time said Lord Carnarvon suffered from “pain as the inflammation affected the nasal passages and eyes”.
Decades later, scientists contended he had died of aspergillosis after inhaling spores of the fungus aspergillus in the tomb, which can lie dormant for months. The fact several others who entered were also found dead withiin a short time led to the myth of the curse.
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Label: Warner Records
Number of tracks: 11
Rating: 4/5
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Rating: 4/5
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